42978014 has 4 divisors (see below), whose sum is σ = 64467024. Its totient is φ = 21489006.

The previous prime is 42977993. The next prime is 42978031. The reversal of 42978014 is 41087924.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10744502 + ... + 10744505.

It is an arithmetic number, because the mean of its divisors is an integer number (16116756).

Almost surely, 2^42978014 is an apocalyptic number.

42978014 is a deficient number, since it is larger than the sum of its proper divisors (21489010).

42978014 is a wasteful number, since it uses less digits than its factorization.

42978014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21489009.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 42978014 is about 6555.7618931746. The cubic root of 42978014 is about 350.2800860067.

The spelling of 42978014 in words is "forty-two million, nine hundred seventy-eight thousand, fourteen".