78053642 has 8 divisors (see below), whose sum is σ = 117450756. Its totient is φ = 38903392.

The previous prime is 78053641. The next prime is 78053663. The reversal of 78053642 is 24635087.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77986561 + 67081 = 8831^2 + 259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (78053641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60923 + ... + 62190.

Almost surely, 2^78053642 is an apocalyptic number.

78053642 is a deficient number, since it is larger than the sum of its proper divisors (39397114).

78053642 is a wasteful number, since it uses less digits than its factorization.

78053642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123432.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 78053642 is about 8834.7972246113. The cubic root of 78053642 is about 427.3637918607.

The spelling of 78053642 in words is "seventy-eight million, fifty-three thousand, six hundred forty-two".