42722615 has 48 divisors (see below), whose sum is σ = 62524224. Its totient is φ = 27709440.

The previous prime is 42722609. The next prime is 42722627. The reversal of 42722615 is 51622724.

It is a happy number.

It is not a de Polignac number, because 42722615 - 2¹² = 42718519 is a prime.

It is a Duffinian number.

Its product of digits (6720) is a multiple of the sum of its prime factors (140).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1041995 + ... + 1042035.

It is an arithmetic number, because the mean of its divisors is an integer number (1302588).

Almost surely, 2^42722615 is an apocalyptic number.

42722615 is a deficient number, since it is larger than the sum of its proper divisors (19801609).

42722615 is a wasteful number, since it uses less digits than its factorization.

42722615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 99 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 42722615 is about 6536.2538965374. The cubic root of 42722615 is about 349.5848547174.

The spelling of 42722615 in words is "forty-two million, seven hundred twenty-two thousand, six hundred fifteen".