78153042 has 32 divisors (see below), whose sum is σ = 179493120. Its totient is φ = 22435920.

The previous prime is 78152989. The next prime is 78153043. The reversal of 78153042 is 24035187.

It is a super-2 number, since 2×78153042² = 12215795947707528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78153043) 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, 29908 + ... + 32415.

It is an arithmetic number, because the mean of its divisors is an integer number (5609160).

Almost surely, 2^78153042 is an apocalyptic number.

78153042 is an abundant number, since it is smaller than the sum of its proper divisors (101340078).

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

78153042 is a wasteful number, since it uses less digits than its factorization.

78153042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62358.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 78153042 is about 8840.4209175808. The cubic root of 78153042 is about 427.5451284393.

The spelling of 78153042 in words is "seventy-eight million, one hundred fifty-three thousand, forty-two".