139256001 has 6 divisors (see below), whose sum is σ = 201147570. Its totient is φ = 92837328.

The previous prime is 139255981. The next prime is 139256009. The reversal of 139256001 is 100652931.

139256001 is a `hidden beast` number, since 1 + 39 + 25 + 600 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 125417601 + 13838400 = 11199^2 + 3720^2 .

It is not a de Polignac number, because 139256001 - 2¹⁰ = 139254977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139256009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7736436 + ... + 7736453.

It is an arithmetic number, because the mean of its divisors is an integer number (33524595).

Almost surely, 2^139256001 is an apocalyptic number.

It is an amenable number.

139256001 is a deficient number, since it is larger than the sum of its proper divisors (61891569).

139256001 is a wasteful number, since it uses less digits than its factorization.

139256001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15472895 (or 15472892 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 139256001 is about 11800.6779889971. The cubic root of 139256001 is about 518.3279639738.

The spelling of 139256001 in words is "one hundred thirty-nine million, two hundred fifty-six thousand, one".