140456437 has 8 divisors (see below), whose sum is σ = 154492992. Its totient is φ = 127686460.

The previous prime is 140456429. The next prime is 140456479. The reversal of 140456437 is 734654041.

It is not a de Polignac number, because 140456437 - 2³ = 140456429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140456137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51433 + ... + 54094.

It is an arithmetic number, because the mean of its divisors is an integer number (19311624).

Almost surely, 2^140456437 is an apocalyptic number.

It is an amenable number.

140456437 is a deficient number, since it is larger than the sum of its proper divisors (14036555).

140456437 is an equidigital number, since it uses as much as digits as its factorization.

140456437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105560 (or 105538 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 140456437 is about 11851.4318544216. The cubic root of 140456437 is about 519.8130948104.

The spelling of 140456437 in words is "one hundred forty million, four hundred fifty-six thousand, four hundred thirty-seven".