1242645052 has 12 divisors (see below), whose sum is σ = 2372322456. Its totient is φ = 564838640.

The previous prime is 1242644999. The next prime is 1242645059. The reversal of 1242645052 is 2505462421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242645059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14120923 + ... + 14121010.

It is an arithmetic number, because the mean of its divisors is an integer number (197693538).

Almost surely, 2^1242645052 is an apocalyptic number.

It is an amenable number.

1242645052 is a deficient number, since it is larger than the sum of its proper divisors (1129677404).

1242645052 is a wasteful number, since it uses less digits than its factorization.

1242645052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28241948 (or 28241946 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1242645052 is about 35251.1709309067. The cubic root of 1242645052 is about 1075.1004202567.

The spelling of 1242645052 in words is "one billion, two hundred forty-two million, six hundred forty-five thousand, fifty-two".