76521429 has 12 divisors (see below), whose sum is σ = 114625056. Its totient is φ = 51014124.

The previous prime is 76521427. The next prime is 76521433. The reversal of 76521429 is 92412567.

It is not a de Polignac number, because 76521429 - 2¹ = 76521427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76521393 and 76521402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76521421) 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 11 ways as a sum of consecutive naturals, for example, 157209 + ... + 157694.

It is an arithmetic number, because the mean of its divisors is an integer number (9552088).

Almost surely, 2^76521429 is an apocalyptic number.

It is an amenable number.

76521429 is a deficient number, since it is larger than the sum of its proper divisors (38103627).

76521429 is an equidigital number, since it uses as much as digits as its factorization.

76521429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314918 (or 314906 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 76521429 is about 8747.6527708866. The cubic root of 76521429 is about 424.5488712479.

The spelling of 76521429 in words is "seventy-six million, five hundred twenty-one thousand, four hundred twenty-nine".