139140001 has 32 divisors (see below), whose sum is σ = 188875008. Its totient is φ = 98979840.

The previous prime is 139139989. The next prime is 139140011. The reversal of 139140001 is 100041931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 139140001 - 2⁵ = 139139969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139140011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96381 + ... + 97813.

It is an arithmetic number, because the mean of its divisors is an integer number (5902344).

Almost surely, 2^139140001 is an apocalyptic number.

139140001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139140001 is a deficient number, since it is larger than the sum of its proper divisors (49735007).

139140001 is a wasteful number, since it uses less digits than its factorization.

139140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 139140001 is about 11795.7619931906. The cubic root of 139140001 is about 518.1840019037.

Adding to 139140001 its reverse (100041931), we get a palindrome (239181932).

The spelling of 139140001 in words is "one hundred thirty-nine million, one hundred forty thousand, one".