140902690 has 16 divisors (see below), whose sum is σ = 255624192. Its totient is φ = 55916784.

The previous prime is 140902667. The next prime is 140902693. The reversal of 140902690 is 96209041.

It is a happy number.

It is a super-2 number, since 2×140902690² = 39707136098472200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140902693) 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, 54204 + ... + 56743.

It is an arithmetic number, because the mean of its divisors is an integer number (15976512).

Almost surely, 2^140902690 is an apocalyptic number.

140902690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140902690 is a deficient number, since it is larger than the sum of its proper divisors (114721502).

140902690 is a wasteful number, since it uses less digits than its factorization.

140902690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111081.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 140902690 is about 11870.2438896596. The cubic root of 140902690 is about 520.3630231340.

The spelling of 140902690 in words is "one hundred forty million, nine hundred two thousand, six hundred ninety".