1242624655242 has 24 divisors (see below), whose sum is σ = 2722604585220. Its totient is φ = 409554192960.

The previous prime is 1242624655241. The next prime is 1242624655243. The reversal of 1242624655242 is 2425564262421.

1242624655242 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 62 + 4 + 65 + 524 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1242624655241) and next prime (1242624655243).

It can be written as a sum of positive squares in 2 ways, for example, as 1075221751041 + 167402904201 = 1036929^2 + 409149^2 .

It is not an unprimeable number, because it can be changed into a prime (1242624655241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 387833809 + ... + 387837012.

Almost surely, 2^{1242624655242} is an apocalyptic number.

1242624655242 is an abundant number, since it is smaller than the sum of its proper divisors (1479979929978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242624655242 is a wasteful number, since it uses less digits than its factorization.

1242624655242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775670918 (or 775670915 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 45.

The spelling of 1242624655242 in words is "one trillion, two hundred forty-two billion, six hundred twenty-four million, six hundred fifty-five thousand, two hundred forty-two".