139434131 has 8 divisors (see below), whose sum is σ = 143193600. Its totient is φ = 135724680.

The previous prime is 139434121. The next prime is 139434137. The reversal of 139434131 is 131434931.

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

It is a cyclic number.

It is not a de Polignac number, because 139434131 - 2¹⁸ = 139171987 is a prime.

It is a super-2 number, since 2×139434131² = 38883753775450322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139434094 and 139434103.

It is not an unprimeable number, because it can be changed into a prime (139434137) 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, 6821 + ... + 18038.

It is an arithmetic number, because the mean of its divisors is an integer number (17899200).

Almost surely, 2^139434131 is an apocalyptic number.

139434131 is a deficient number, since it is larger than the sum of its proper divisors (3759469).

139434131 is an equidigital number, since it uses as much as digits as its factorization.

139434131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25009.

The product of its digits is 3888, while the sum is 29.

The square root of 139434131 is about 11808.2230246553. The cubic root of 139434131 is about 518.5488770631.

The spelling of 139434131 in words is "one hundred thirty-nine million, four hundred thirty-four thousand, one hundred thirty-one".