77275942 has 4 divisors (see below), whose sum is σ = 115913916. Its totient is φ = 38637970.

The previous prime is 77275937. The next prime is 77275949. The reversal of 77275942 is 24957277.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77275949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19318984 + ... + 19318987.

It is an arithmetic number, because the mean of its divisors is an integer number (28978479).

Almost surely, 2^77275942 is an apocalyptic number.

77275942 is a deficient number, since it is larger than the sum of its proper divisors (38637974).

77275942 is a wasteful number, since it uses less digits than its factorization.

77275942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38637973.

The product of its digits is 246960, while the sum is 43.

The square root of 77275942 is about 8790.6735805625. The cubic root of 77275942 is about 425.9396822914.

The spelling of 77275942 in words is "seventy-seven million, two hundred seventy-five thousand, nine hundred forty-two".