140687642 has 32 divisors (see below), whose sum is σ = 229236480. Its totient is φ = 64556800.

The previous prime is 140687639. The next prime is 140687713. The reversal of 140687642 is 246786041.

It is a super-2 number, since 2×140687642² = 39586025223040328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140687596 and 140687605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350642 + ... + 351042.

It is an arithmetic number, because the mean of its divisors is an integer number (7163640).

Almost surely, 2^140687642 is an apocalyptic number.

140687642 is a deficient number, since it is larger than the sum of its proper divisors (88548838).

140687642 is a wasteful number, since it uses less digits than its factorization.

140687642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 140687642 is about 11861.1821501906. The cubic root of 140687642 is about 520.0981594773.

The spelling of 140687642 in words is "one hundred forty million, six hundred eighty-seven thousand, six hundred forty-two".