978258142 has 8 divisors (see below), whose sum is σ = 1467602136. Its totient is φ = 489057432.

The previous prime is 978258139. The next prime is 978258143. The reversal of 978258142 is 241852879.

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

It is a junction number, because it is equal to n+sod(n) for n = 978258092 and 978258101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978258143) 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, 16713 + ... + 47284.

It is an arithmetic number, because the mean of its divisors is an integer number (183450267).

Almost surely, 2^978258142 is an apocalyptic number.

978258142 is a deficient number, since it is larger than the sum of its proper divisors (489343994).

978258142 is a wasteful number, since it uses less digits than its factorization.

978258142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71642.

The product of its digits is 322560, while the sum is 46.

The square root of 978258142 is about 31277.1185053866. The cubic root of 978258142 is about 992.6995470837.

The spelling of 978258142 in words is "nine hundred seventy-eight million, two hundred fifty-eight thousand, one hundred forty-two".