78742935 has 64 divisors (see below), whose sum is σ = 149568000. Its totient is φ = 39680928.

The previous prime is 78742927. The next prime is 78742943. The reversal of 78742935 is 53924787.

It is an interprime number because it is at equal distance from previous prime (78742927) and next prime (78742943).

It is not a de Polignac number, because 78742935 - 2³ = 78742927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 207576 + ... + 207954.

It is an arithmetic number, because the mean of its divisors is an integer number (2337000).

Almost surely, 2^78742935 is an apocalyptic number.

78742935 is a deficient number, since it is larger than the sum of its proper divisors (70825065).

78742935 is an equidigital number, since it uses as much as digits as its factorization.

78742935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 406 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 78742935 is about 8873.7215980670. The cubic root of 78742935 is about 428.6181256260.

The spelling of 78742935 in words is "seventy-eight million, seven hundred forty-two thousand, nine hundred thirty-five".