1372434521 has 8 divisors (see below), whose sum is σ = 1386665280. Its totient is φ = 1358221392.

The previous prime is 1372434493. The next prime is 1372434527. The reversal of 1372434521 is 1254342731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1372434521 - 2⁶ = 1372434457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1372434527) 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, 200471 + ... + 207203.

It is an arithmetic number, because the mean of its divisors is an integer number (173333160).

Almost surely, 2^1372434521 is an apocalyptic number.

It is an amenable number.

1372434521 is a deficient number, since it is larger than the sum of its proper divisors (14230759).

1372434521 is a wasteful number, since it uses less digits than its factorization.

1372434521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8815.

The product of its digits is 20160, while the sum is 32.

The square root of 1372434521 is about 37046.3833727396. The cubic root of 1372434521 is about 1111.2980299642.

The spelling of 1372434521 in words is "one billion, three hundred seventy-two million, four hundred thirty-four thousand, five hundred twenty-one".