1242042952 has 8 divisors (see below), whose sum is σ = 2328830550. Its totient is φ = 621021472.

The previous prime is 1242042913. The next prime is 1242042953. The reversal of 1242042952 is 2592402421.

It can be written as a sum of positive squares in only one way, i.e., 1147447876 + 94595076 = 33874^2 + 9726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1242042952² = 3085341389225748608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242042953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77627677 + ... + 77627692.

Almost surely, 2^1242042952 is an apocalyptic number.

It is an amenable number.

1242042952 is a deficient number, since it is larger than the sum of its proper divisors (1086787598).

1242042952 is a wasteful number, since it uses less digits than its factorization.

1242042952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155255375 (or 155255371 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1242042952 is about 35242.6297543188. The cubic root of 1242042952 is about 1074.9267523916.

The spelling of 1242042952 in words is "one billion, two hundred forty-two million, forty-two thousand, nine hundred fifty-two".