78042498 has 32 divisors (see below), whose sum is σ = 159511680. Its totient is φ = 25449600.

The previous prime is 78042487. The next prime is 78042499. The reversal of 78042498 is 89424087.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78042499) 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, 53211 + ... + 54657.

It is an arithmetic number, because the mean of its divisors is an integer number (4984740).

Almost surely, 2^78042498 is an apocalyptic number.

78042498 is an abundant number, since it is smaller than the sum of its proper divisors (81469182).

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

78042498 is a wasteful number, since it uses less digits than its factorization.

78042498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 78042498 is about 8834.1665141653. The cubic root of 78042498 is about 427.3434521360.

The spelling of 78042498 in words is "seventy-eight million, forty-two thousand, four hundred ninety-eight".