1242404445 has 8 divisors (see below), whose sum is σ = 1987847136. Its totient is φ = 662615696.

The previous prime is 1242404431. The next prime is 1242404459. The reversal of 1242404445 is 5444042421.

It is an interprime number because it is at equal distance from previous prime (1242404431) and next prime (1242404459).

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 1242404445 - 2⁹ = 1242403933 is a prime.

It is a super-3 number, since 3×1242404445³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41413467 + ... + 41413496.

It is an arithmetic number, because the mean of its divisors is an integer number (248480892).

Almost surely, 2^1242404445 is an apocalyptic number.

1242404445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242404445 is a deficient number, since it is larger than the sum of its proper divisors (745442691).

1242404445 is an equidigital number, since it uses as much as digits as its factorization.

1242404445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82826971.

The product of its (nonzero) digits is 20480, while the sum is 30.

The square root of 1242404445 is about 35247.7580138085. The cubic root of 1242404445 is about 1075.0310270475.

Adding to 1242404445 its reverse (5444042421), we get a palindrome (6686446866).

The spelling of 1242404445 in words is "one billion, two hundred forty-two million, four hundred four thousand, four hundred forty-five".