139022506 has 48 divisors (see below), whose sum is σ = 257320800. Its totient is φ = 56010528.

The previous prime is 139022461. The next prime is 139022567. The reversal of 139022506 is 605220931.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 366625 + ... + 367003.

It is an arithmetic number, because the mean of its divisors is an integer number (5360850).

Almost surely, 2^139022506 is an apocalyptic number.

139022506 is a deficient number, since it is larger than the sum of its proper divisors (118298294).

139022506 is a wasteful number, since it uses less digits than its factorization.

139022506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 139022506 is about 11790.7805509220. The cubic root of 139022506 is about 518.0381028704.

The spelling of 139022506 in words is "one hundred thirty-nine million, twenty-two thousand, five hundred six".