77942235 has 16 divisors (see below), whose sum is σ = 142523136. Its totient is φ = 35630688.

The previous prime is 77942233. The next prime is 77942257. The reversal of 77942235 is 53224977.

It is not a de Polignac number, because 77942235 - 2¹ = 77942233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77942193 and 77942202.

It is not an unprimeable number, because it can be changed into a prime (77942233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371049 + ... + 371258.

It is an arithmetic number, because the mean of its divisors is an integer number (8907696).

Almost surely, 2^77942235 is an apocalyptic number.

77942235 is a deficient number, since it is larger than the sum of its proper divisors (64580901).

77942235 is a wasteful number, since it uses less digits than its factorization.

77942235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742322.

The product of its digits is 105840, while the sum is 39.

The square root of 77942235 is about 8828.4899614827. The cubic root of 77942235 is about 427.1603677078.

The spelling of 77942235 in words is "seventy-seven million, nine hundred forty-two thousand, two hundred thirty-five".