120401544 has 16 divisors (see below), whose sum is σ = 301003920. Its totient is φ = 40133840.

The previous prime is 120401539. The next prime is 120401549. The reversal of 120401544 is 445104021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120401539) and next prime (120401549).

It is a self number, because there is not a number n which added to its sum of digits gives 120401544.

It is not an unprimeable number, because it can be changed into a prime (120401549) 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 3 ways as a sum of consecutive naturals, for example, 2508342 + ... + 2508389.

It is an arithmetic number, because the mean of its divisors is an integer number (18812745).

Almost surely, 2^120401544 is an apocalyptic number.

It is an amenable number.

120401544 is an abundant number, since it is smaller than the sum of its proper divisors (180602376).

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

120401544 is a wasteful number, since it uses less digits than its factorization.

120401544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016740 (or 5016736 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 120401544 is about 10972.7637357231. The cubic root of 120401544 is about 493.7919649425.

Adding to 120401544 its reverse (445104021), we get a palindrome (565505565).

The spelling of 120401544 in words is "one hundred twenty million, four hundred one thousand, five hundred forty-four".