42072694 has 4 divisors (see below), whose sum is σ = 63109044. Its totient is φ = 21036346.

The previous prime is 42072691. The next prime is 42072731. The reversal of 42072694 is 49627024.

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

It is a super-2 number, since 2×42072694² = 3540223160835272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42072691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10518172 + ... + 10518175.

It is an arithmetic number, because the mean of its divisors is an integer number (15777261).

Almost surely, 2^42072694 is an apocalyptic number.

42072694 is a deficient number, since it is larger than the sum of its proper divisors (21036350).

42072694 is a wasteful number, since it uses less digits than its factorization.

42072694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21036349.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 42072694 is about 6486.3467375712. The cubic root of 42072694 is about 347.8030935656.

The spelling of 42072694 in words is "forty-two million, seventy-two thousand, six hundred ninety-four".