42720364 has 12 divisors (see below), whose sum is σ = 77338800. Its totient is φ = 20623568.

The previous prime is 42720347. The next prime is 42720367. The reversal of 42720364 is 46302724.

It is not an unprimeable number, because it can be changed into a prime (42720367) 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, 184024 + ... + 184255.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^42720364 is an apocalyptic number.

It is an amenable number.

42720364 is a deficient number, since it is larger than the sum of its proper divisors (34618436).

42720364 is a wasteful number, since it uses less digits than its factorization.

42720364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368312 (or 368310 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 42720364 is about 6536.0817008358. The cubic root of 42720364 is about 349.5787148832.

The spelling of 42720364 in words is "forty-two million, seven hundred twenty thousand, three hundred sixty-four".