42061564 has 6 divisors (see below), whose sum is σ = 73607744. Its totient is φ = 21030780.

The previous prime is 42061559. The next prime is 42061577. The reversal of 42061564 is 46516024.

It is a super-2 number, since 2×42061564² = 3538350332252192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257692 + ... + 5257699.

Almost surely, 2^42061564 is an apocalyptic number.

It is an amenable number.

42061564 is a deficient number, since it is larger than the sum of its proper divisors (31546180).

42061564 is a wasteful number, since it uses less digits than its factorization.

42061564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515395 (or 10515393 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42061564 is about 6485.4887248379. The cubic root of 42061564 is about 347.7724213373.

Adding to 42061564 its reverse (46516024), we get a palindrome (88577588).

The spelling of 42061564 in words is "forty-two million, sixty-one thousand, five hundred sixty-four".