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1240121045 = 5376703357
BaseRepresentation
bin100100111101010…
…1011111011010101
310012102111200021002
41021322223323111
510014432333140
6323020033045
742505566152
oct11172537325
93172450232
101240121045
1158701a329
122a7392785
13169c01147
14ba9b5229
1573d13415
hex49eabed5

1240121045 has 8 divisors (see below), whose sum is σ = 1528365624. Its totient is φ = 965283264.

The previous prime is 1240121017. The next prime is 1240121053. The reversal of 1240121045 is 5401210421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 515380804 + 724740241 = 22702^2 + 26921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240121045 - 220 = 1239072469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3351494 + ... + 3351863.

It is an arithmetic number, because the mean of its divisors is an integer number (191045703).

Almost surely, 21240121045 is an apocalyptic number.

It is an amenable number.

1240121045 is a deficient number, since it is larger than the sum of its proper divisors (288244579).

1240121045 is an equidigital number, since it uses as much as digits as its factorization.

1240121045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703399.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1240121045 is about 35215.3524048816. The cubic root of 1240121045 is about 1074.3720276824.

Adding to 1240121045 its reverse (5401210421), we get a palindrome (6641331466).

The spelling of 1240121045 in words is "one billion, two hundred forty million, one hundred twenty-one thousand, forty-five".

Divisors: 1 5 37 185 6703357 33516785 248024209 1240121045