1252434987 has 8 divisors (see below), whose sum is σ = 1855459280. Its totient is φ = 834956640.

The previous prime is 1252434979. The next prime is 1252435007. The reversal of 1252434987 is 7894342521.

1252434987 is a `hidden beast` number, since 1 + 2 + 524 + 3 + 49 + 87 = 666.

It is not a de Polignac number, because 1252434987 - 2³ = 1252434979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252434907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23193214 + ... + 23193267.

It is an arithmetic number, because the mean of its divisors is an integer number (231932410).

Almost surely, 2^1252434987 is an apocalyptic number.

1252434987 is a deficient number, since it is larger than the sum of its proper divisors (603024293).

1252434987 is an equidigital number, since it uses as much as digits as its factorization.

1252434987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46386490 (or 46386484 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1252434987 is about 35389.7582218359. The cubic root of 1252434987 is about 1077.9163607155.

The spelling of 1252434987 in words is "one billion, two hundred fifty-two million, four hundred thirty-four thousand, nine hundred eighty-seven".