120402342540 has 48 divisors (see below), whose sum is σ = 374585067360. Its totient is φ = 32107291200.

The previous prime is 120402342527. The next prime is 120402342547. The reversal of 120402342540 is 45243204021.

120402342540 is a `hidden beast` number, since 1 + 2 + 0 + 402 + 3 + 4 + 254 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (120402342547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111483111 + ... + 111484190.

It is an arithmetic number, because the mean of its divisors is an integer number (7803855570).

Almost surely, 2^120402342540 is an apocalyptic number.

120402342540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120402342540 is an abundant number, since it is smaller than the sum of its proper divisors (254182724820).

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

120402342540 is a wasteful number, since it uses less digits than its factorization.

120402342540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222967319 (or 222967311 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 120402342540 its reverse (45243204021), we get a palindrome (165645546561).

The spelling of 120402342540 in words is "one hundred twenty billion, four hundred two million, three hundred forty-two thousand, five hundred forty".