140912639 has 16 divisors (see below), whose sum is σ = 167540736. Its totient is φ = 115970400.

The previous prime is 140912621. The next prime is 140912657. The reversal of 140912639 is 936219041.

It is an interprime number because it is at equal distance from previous prime (140912621) and next prime (140912657).

It is a de Polignac number, because none of the positive numbers 2^k-140912639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140912599 and 140912608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140912659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25949 + ... + 30905.

It is an arithmetic number, because the mean of its divisors is an integer number (10471296).

Almost surely, 2^140912639 is an apocalyptic number.

140912639 is a deficient number, since it is larger than the sum of its proper divisors (26628097).

140912639 is a wasteful number, since it uses less digits than its factorization.

140912639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 140912639 is about 11870.6629553703. The cubic root of 140912639 is about 520.3752702858.

The spelling of 140912639 in words is "one hundred forty million, nine hundred twelve thousand, six hundred thirty-nine".