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1242095 = 5417383
BaseRepresentation
bin100101111001111101111
32100002211112
410233033233
5304221340
642342235
713362161
oct4571757
92302745
101242095
11779228
124ba97b
1334648a
14244931
15198065
hex12f3ef

1242095 has 16 divisors (see below), whose sum is σ = 1566432. Its totient is φ = 944640.

The previous prime is 1242089. The next prime is 1242097. The reversal of 1242095 is 5902421.

It is a de Polignac number, because none of the positive numbers 2k-1242095 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14924 + ... + 15006.

It is an arithmetic number, because the mean of its divisors is an integer number (97902).

21242095 is an apocalyptic number.

1242095 is a deficient number, since it is larger than the sum of its proper divisors (324337).

1242095 is an equidigital number, since it uses as much as digits as its factorization.

1242095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1242095 is about 1114.4931583460. The cubic root of 1242095 is about 107.4941767172.

The spelling of 1242095 in words is "one million, two hundred forty-two thousand, ninety-five".

Divisors: 1 5 41 73 83 205 365 415 2993 3403 6059 14965 17015 30295 248419 1242095