120140406 has 24 divisors (see below), whose sum is σ = 267340944. Its totient is φ = 38964240.

The previous prime is 120140387. The next prime is 120140429. The reversal of 120140406 is 604041021.

120140406 is a `hidden beast` number, since 120 + 140 + 406 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89530 + ... + 90861.

It is an arithmetic number, because the mean of its divisors is an integer number (11139206).

Almost surely, 2^120140406 is an apocalyptic number.

120140406 is an abundant number, since it is smaller than the sum of its proper divisors (147200538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120140406 is a wasteful number, since it uses less digits than its factorization.

120140406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180436 (or 180433 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 120140406 is about 10960.8579043796. The cubic root of 120140406 is about 493.4347126487.

Adding to 120140406 its reverse (604041021), we get a palindrome (724181427).

The spelling of 120140406 in words is "one hundred twenty million, one hundred forty thousand, four hundred six".