139142555 has 8 divisors (see below), whose sum is σ = 167665344. Its totient is φ = 110851200.

The previous prime is 139142519. The next prime is 139142557. The reversal of 139142555 is 555241931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139142555 - 2⁸ = 139142299 is a prime.

It is a super-2 number, since 2×139142555² = 38721301223856050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139142557) 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 7 ways as a sum of consecutive naturals, for example, 56531 + ... + 58940.

It is an arithmetic number, because the mean of its divisors is an integer number (20958168).

Almost surely, 2^139142555 is an apocalyptic number.

139142555 is a deficient number, since it is larger than the sum of its proper divisors (28522789).

139142555 is a wasteful number, since it uses less digits than its factorization.

139142555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115717.

The product of its digits is 27000, while the sum is 35.

The square root of 139142555 is about 11795.8702519144. The cubic root of 139142555 is about 518.1871724127.

The spelling of 139142555 in words is "one hundred thirty-nine million, one hundred forty-two thousand, five hundred fifty-five".