140520902 has 16 divisors (see below), whose sum is σ = 213194592. Its totient is φ = 69460800.

The previous prime is 140520889. The next prime is 140520911. The reversal of 140520902 is 209025041.

140520902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140520902² = 39492247797787208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69368 + ... + 71364.

It is an arithmetic number, because the mean of its divisors is an integer number (13324662).

Almost surely, 2^140520902 is an apocalyptic number.

140520902 is a deficient number, since it is larger than the sum of its proper divisors (72673690).

140520902 is a wasteful number, since it uses less digits than its factorization.

140520902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 140520902 is about 11854.1512559947. The cubic root of 140520902 is about 519.8926084934.

Adding to 140520902 its reverse (209025041), we get a palindrome (349545943).

The spelling of 140520902 in words is "one hundred forty million, five hundred twenty thousand, nine hundred two".