1252431433 has 6 divisors (see below), whose sum is σ = 1376639642. Its totient is φ = 1138573920.

The previous prime is 1252431421. The next prime is 1252431533. The reversal of 1252431433 is 3341342521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 929762064 + 322669369 = 30492^2 + 17963^2 .

It is not a de Polignac number, because 1252431433 - 2²⁵ = 1218877001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252431533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5175216 + ... + 5175457.

Almost surely, 2^1252431433 is an apocalyptic number.

It is an amenable number.

1252431433 is a deficient number, since it is larger than the sum of its proper divisors (124208209).

1252431433 is a wasteful number, since it uses less digits than its factorization.

1252431433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10350695 (or 10350684 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 1252431433 is about 35389.7080095329. The cubic root of 1252431433 is about 1077.9153411234.

Adding to 1252431433 its reverse (3341342521), we get a palindrome (4593773954).

The spelling of 1252431433 in words is "one billion, two hundred fifty-two million, four hundred thirty-one thousand, four hundred thirty-three".