140137407 has 24 divisors (see below), whose sum is σ = 213548400. Its totient is φ = 88311168.

The previous prime is 140137379. The next prime is 140137421. The reversal of 140137407 is 704731041.

It is not a de Polignac number, because 140137407 - 2⁷ = 140137279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140137447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137833 + ... + 138845.

It is an arithmetic number, because the mean of its divisors is an integer number (8897850).

Almost surely, 2^140137407 is an apocalyptic number.

140137407 is a deficient number, since it is larger than the sum of its proper divisors (73410993).

140137407 is a wasteful number, since it uses less digits than its factorization.

140137407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 140137407 is about 11837.9646476918. The cubic root of 140137407 is about 519.4192320282.

Adding to 140137407 its reverse (704731041), we get a palindrome (844868448).

The spelling of 140137407 in words is "one hundred forty million, one hundred thirty-seven thousand, four hundred seven".