1252042356 has 24 divisors (see below), whose sum is σ = 2924468064. Its totient is φ = 416913760.

The previous prime is 1252042349. The next prime is 1252042357. The reversal of 1252042356 is 6532402521.

It is a super-2 number, since 2×1252042356² = 3135220122436061472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252042357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42075 + ... + 65378.

It is an arithmetic number, because the mean of its divisors is an integer number (121852836).

Almost surely, 2^1252042356 is an apocalyptic number.

It is an amenable number.

1252042356 is an abundant number, since it is smaller than the sum of its proper divisors (1672425708).

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

1252042356 is a wasteful number, since it uses less digits than its factorization.

1252042356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108431 (or 108429 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1252042356 is about 35384.2105465135. The cubic root of 1252042356 is about 1077.8037087969.

Adding to 1252042356 its reverse (6532402521), we get a palindrome (7784444877).

The spelling of 1252042356 in words is "one billion, two hundred fifty-two million, forty-two thousand, three hundred fifty-six".