120251403 has 6 divisors (see below), whose sum is σ = 173696484. Its totient is φ = 80167596.

The previous prime is 120251393. The next prime is 120251407. The reversal of 120251403 is 304152021.

120251403 is a `hidden beast` number, since 12 + 0 + 251 + 403 = 666.

It is not a de Polignac number, because 120251403 - 2²⁵ = 86696971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120251407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6680625 + ... + 6680642.

It is an arithmetic number, because the mean of its divisors is an integer number (28949414).

Almost surely, 2^120251403 is an apocalyptic number.

120251403 is a deficient number, since it is larger than the sum of its proper divisors (53445081).

120251403 is a wasteful number, since it uses less digits than its factorization.

120251403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361273 (or 13361270 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 120251403 is about 10965.9200708376. The cubic root of 120251403 is about 493.5866263307.

The spelling of 120251403 in words is "one hundred twenty million, two hundred fifty-one thousand, four hundred three".