42715994 has 4 divisors (see below), whose sum is σ = 64073994. Its totient is φ = 21357996.

The previous prime is 42715993. The next prime is 42716027. The reversal of 42715994 is 49951724.

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

It can be written as a sum of positive squares in only one way, i.e., 21967969 + 20748025 = 4687^2 + 4555^2 .

It is a super-2 number, since 2×42715994² = 3649312286816072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42715993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10678997 + ... + 10679000.

Almost surely, 2^42715994 is an apocalyptic number.

42715994 is a deficient number, since it is larger than the sum of its proper divisors (21358000).

42715994 is a wasteful number, since it uses less digits than its factorization.

42715994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21357999.

The product of its digits is 90720, while the sum is 41.

The square root of 42715994 is about 6535.7473941394. The cubic root of 42715994 is about 349.5667946424.

The spelling of 42715994 in words is "forty-two million, seven hundred fifteen thousand, nine hundred ninety-four".