1252432489 has 32 divisors (see below), whose sum is σ = 1582083072. Its totient is φ = 963144000.

The previous prime is 1252432487. The next prime is 1252432507. The reversal of 1252432489 is 9842342521.

It is not a de Polignac number, because 1252432489 - 2¹ = 1252432487 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252432487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2550534 + ... + 2551024.

It is an arithmetic number, because the mean of its divisors is an integer number (49440096).

Almost surely, 2^1252432489 is an apocalyptic number.

It is an amenable number.

1252432489 is a deficient number, since it is larger than the sum of its proper divisors (329650583).

1252432489 is a wasteful number, since it uses less digits than its factorization.

1252432489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877.

The product of its digits is 138240, while the sum is 40.

The square root of 1252432489 is about 35389.7229291217. The cubic root of 1252432489 is about 1077.9156440750.

The spelling of 1252432489 in words is "one billion, two hundred fifty-two million, four hundred thirty-two thousand, four hundred eighty-nine".