1252942431 has 16 divisors (see below), whose sum is σ = 1800185856. Its totient is φ = 770574816.

The previous prime is 1252942421. The next prime is 1252942463. The reversal of 1252942431 is 1342492521.

It is not a de Polignac number, because 1252942431 - 2¹¹ = 1252940383 is a prime.

It is a super-2 number, since 2×1252942431² = 3139729470800379522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1252942392 and 1252942401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252942421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62286 + ... + 79908.

It is an arithmetic number, because the mean of its divisors is an integer number (112511616).

Almost surely, 2^1252942431 is an apocalyptic number.

1252942431 is a deficient number, since it is larger than the sum of its proper divisors (547243425).

1252942431 is a wasteful number, since it uses less digits than its factorization.

1252942431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19462.

The product of its digits is 17280, while the sum is 33.

The square root of 1252942431 is about 35396.9268581328. The cubic root of 1252942431 is about 1078.0619193910.

The spelling of 1252942431 in words is "one billion, two hundred fifty-two million, nine hundred forty-two thousand, four hundred thirty-one".