140040279 has 16 divisors (see below), whose sum is σ = 218387200. Its totient is φ = 88446168.

The previous prime is 140040253. The next prime is 140040281. The reversal of 140040279 is 972040041.

It is a happy number.

It is not a de Polignac number, because 140040279 - 2²³ = 131651671 is a prime.

It is a super-2 number, since 2×140040279² = 39222559484795682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142040279) 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 15 ways as a sum of consecutive naturals, for example, 135979 + ... + 137004.

It is an arithmetic number, because the mean of its divisors is an integer number (13649200).

Almost surely, 2^140040279 is an apocalyptic number.

140040279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

140040279 is a deficient number, since it is larger than the sum of its proper divisors (78346921).

140040279 is a wasteful number, since it uses less digits than its factorization.

140040279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273011 (or 273005 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 140040279 is about 11833.8615422017. The cubic root of 140040279 is about 519.2992026649.

The spelling of 140040279 in words is "one hundred forty million, forty thousand, two hundred seventy-nine".