140520903 has 8 divisors (see below), whose sum is σ = 197222400. Its totient is φ = 88750008.

The previous prime is 140520889. The next prime is 140520911. The reversal of 140520903 is 309025041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140520903 - 2¹⁰ = 140519879 is a prime.

It is a super-2 number, since 2×140520903² = 39492248359870818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140520973) 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, 1232583 + ... + 1232696.

It is an arithmetic number, because the mean of its divisors is an integer number (24652800).

Almost surely, 2^140520903 is an apocalyptic number.

140520903 is a deficient number, since it is larger than the sum of its proper divisors (56701497).

140520903 is a wasteful number, since it uses less digits than its factorization.

140520903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465301.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 140520903 is about 11854.1512981740. The cubic root of 140520903 is about 519.8926097267.

Adding to 140520903 its reverse (309025041), we get a palindrome (449545944).

The spelling of 140520903 in words is "one hundred forty million, five hundred twenty thousand, nine hundred three".