77942452 has 12 divisors (see below), whose sum is σ = 155884960. Its totient is φ = 33403896.

The previous prime is 77942437. The next prime is 77942539. The reversal of 77942452 is 25424977.

77942452 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391802 + ... + 1391857.

Almost surely, 2^77942452 is an apocalyptic number.

It is an amenable number.

77942452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77942452 is a wasteful number, since it uses less digits than its factorization.

77942452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783670 (or 2783668 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 77942452 is about 8828.5022512315. The cubic root of 77942452 is about 427.1607641283.

The spelling of 77942452 in words is "seventy-seven million, nine hundred forty-two thousand, four hundred fifty-two".