140657429 has 16 divisors (see below), whose sum is σ = 160864704. Its totient is φ = 121833600.

The previous prime is 140657423. The next prime is 140657431. The reversal of 140657429 is 924756041.

It is a cyclic number.

It is not a de Polignac number, because 140657429 - 2⁸ = 140657173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140657392 and 140657401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140657423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15767 + ... + 23019.

It is an arithmetic number, because the mean of its divisors is an integer number (10054044).

Almost surely, 2^140657429 is an apocalyptic number.

It is an amenable number.

140657429 is a deficient number, since it is larger than the sum of its proper divisors (20207275).

140657429 is a wasteful number, since it uses less digits than its factorization.

140657429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 140657429 is about 11859.9084735086. The cubic root of 140657429 is about 520.0609260467.

The spelling of 140657429 in words is "one hundred forty million, six hundred fifty-seven thousand, four hundred twenty-nine".