140385902 has 4 divisors (see below), whose sum is σ = 210578856. Its totient is φ = 70192950.

The previous prime is 140385877. The next prime is 140385907. The reversal of 140385902 is 209583041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209583041 = 53 ⋅3954397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140385907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35096474 + ... + 35096477.

It is an arithmetic number, because the mean of its divisors is an integer number (52644714).

Almost surely, 2^140385902 is an apocalyptic number.

140385902 is a deficient number, since it is larger than the sum of its proper divisors (70192954).

140385902 is an equidigital number, since it uses as much as digits as its factorization.

140385902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70192953.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 140385902 is about 11848.4556799610. The cubic root of 140385902 is about 519.7260662705.

The spelling of 140385902 in words is "one hundred forty million, three hundred eighty-five thousand, nine hundred two".