42007564 has 6 divisors (see below), whose sum is σ = 73513244. Its totient is φ = 21003780.

The previous prime is 42007549. The next prime is 42007571. The reversal of 42007564 is 46570024.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250942 + ... + 5250949.

Almost surely, 2^42007564 is an apocalyptic number.

It is an amenable number.

42007564 is a deficient number, since it is larger than the sum of its proper divisors (31505680).

42007564 is a wasteful number, since it uses less digits than its factorization.

42007564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501895 (or 10501893 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 42007564 is about 6481.3242474050. The cubic root of 42007564 is about 347.6235304310.

Adding to 42007564 its reverse (46570024), we get a palindrome (88577588).

The spelling of 42007564 in words is "forty-two million, seven thousand, five hundred sixty-four".