120421152 has 36 divisors (see below), whose sum is σ = 342448470. Its totient is φ = 40140288.

The previous prime is 120421151. The next prime is 120421153. The reversal of 120421152 is 251124021.

It is an interprime number because it is at equal distance from previous prime (120421151) and next prime (120421153).

It can be written as a sum of positive squares in only one way, i.e., 114832656 + 5588496 = 10716^2 + 2364^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (120421151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208777 + ... + 209352.

Almost surely, 2^120421152 is an apocalyptic number.

120421152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120421152 is an abundant number, since it is smaller than the sum of its proper divisors (222027318).

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

120421152 is a wasteful number, since it uses less digits than its factorization.

120421152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418145 (or 418134 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 120421152 is about 10973.6571843666. The cubic root of 120421152 is about 493.8187689933.

Adding to 120421152 its reverse (251124021), we get a palindrome (371545173).

The spelling of 120421152 in words is "one hundred twenty million, four hundred twenty-one thousand, one hundred fifty-two".