139144562 has 18 divisors (see below), whose sum is σ = 220783023. Its totient is φ = 65760444.

The previous prime is 139144561. The next prime is 139144589. The reversal of 139144562 is 265441931.

It can be written as a sum of positive squares in only one way, i.e., 69572281 + 69572281 = 8341^2 + 8341^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8341.

It is a super-2 number, since 2×139144562² = 38722418268343688, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139144561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 316739 + ... + 317177.

Almost surely, 2^139144562 is an apocalyptic number.

139144562 is a deficient number, since it is larger than the sum of its proper divisors (81638461).

139144562 is an frugal number, since it uses more digits than its factorization.

139144562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 460 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 139144562 is about 11795.9553237540. The cubic root of 139144562 is about 518.1896638543.

The spelling of 139144562 in words is "one hundred thirty-nine million, one hundred forty-four thousand, five hundred sixty-two".