140278131 has 54 divisors (see below), whose sum is σ = 244289916. Its totient is φ = 77338800.

The previous prime is 140278123. The next prime is 140278181. The reversal of 140278131 is 131872041.

It is not a de Polignac number, because 140278131 - 2³ = 140278123 is a prime.

It is a super-2 number, since 2×140278131² = 39355908073706322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140278095 and 140278104.

It is not an unprimeable number, because it can be changed into a prime (140278181) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 423636 + ... + 423966.

Almost surely, 2^140278131 is an apocalyptic number.

140278131 is a deficient number, since it is larger than the sum of its proper divisors (104011785).

140278131 is a wasteful number, since it uses less digits than its factorization.

140278131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 140278131 is about 11843.9069145278. The cubic root of 140278131 is about 519.5930383428.

The spelling of 140278131 in words is "one hundred forty million, two hundred seventy-eight thousand, one hundred thirty-one".