139342145 has 16 divisors (see below), whose sum is σ = 171526080. Its totient is φ = 108609984.

The previous prime is 139342127. The next prime is 139342153. The reversal of 139342145 is 541243931.

It is a cyclic number.

It is not a de Polignac number, because 139342145 - 2¹⁸ = 139080001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158447 + ... + 159323.

It is an arithmetic number, because the mean of its divisors is an integer number (10720380).

Almost surely, 2^139342145 is an apocalyptic number.

It is an amenable number.

139342145 is a deficient number, since it is larger than the sum of its proper divisors (32183935).

139342145 is an equidigital number, since it uses as much as digits as its factorization.

139342145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its digits is 12960, while the sum is 32.

The square root of 139342145 is about 11804.3273844807. The cubic root of 139342145 is about 518.4348214639.

The spelling of 139342145 in words is "one hundred thirty-nine million, three hundred forty-two thousand, one hundred forty-five".