120421651 has 16 divisors (see below), whose sum is σ = 139392000. Its totient is φ = 101903328.

The previous prime is 120421649. The next prime is 120421663. The reversal of 120421651 is 156124021.

It is a cyclic number.

It is not a de Polignac number, because 120421651 - 2¹ = 120421649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120421621) 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, 274090 + ... + 274528.

It is an arithmetic number, because the mean of its divisors is an integer number (8712000).

Almost surely, 2^120421651 is an apocalyptic number.

120421651 is a deficient number, since it is larger than the sum of its proper divisors (18970349).

120421651 is a wasteful number, since it uses less digits than its factorization.

120421651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 120421651 is about 10973.6799206100. The cubic root of 120421651 is about 493.8194510862.

Adding to 120421651 its reverse (156124021), we get a palindrome (276545672).

The spelling of 120421651 in words is "one hundred twenty million, four hundred twenty-one thousand, six hundred fifty-one".