120400154031 has 4 divisors (see below), whose sum is σ = 160533538712. Its totient is φ = 80266769352.

The previous prime is 120400154027. The next prime is 120400154053. The reversal of 120400154031 is 130451004021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120400154031 - 2² = 120400154027 is a prime.

It is a super-2 number, since 2×120400154031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120400153989 and 120400154007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120400154011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20066692336 + ... + 20066692341.

It is an arithmetic number, because the mean of its divisors is an integer number (40133384678).

Almost surely, 2^120400154031 is an apocalyptic number.

120400154031 is a deficient number, since it is larger than the sum of its proper divisors (40133384681).

120400154031 is an equidigital number, since it uses as much as digits as its factorization.

120400154031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40133384680.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 120400154031 its reverse (130451004021), we get a palindrome (250851158052).

The spelling of 120400154031 in words is "one hundred twenty billion, four hundred million, one hundred fifty-four thousand, thirty-one".