120142621 has 16 divisors (see below), whose sum is σ = 132148800. Its totient is φ = 108718848.

The previous prime is 120142619. The next prime is 120142637. The reversal of 120142621 is 126241021.

It is a cyclic number.

It is not a de Polignac number, because 120142621 - 2¹ = 120142619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120142601) 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, 186526 + ... + 187168.

It is an arithmetic number, because the mean of its divisors is an integer number (8259300).

Almost surely, 2^120142621 is an apocalyptic number.

It is an amenable number.

120142621 is a deficient number, since it is larger than the sum of its proper divisors (12006179).

120142621 is a wasteful number, since it uses less digits than its factorization.

120142621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 120142621 is about 10960.9589452748. The cubic root of 120142621 is about 493.4377450761.

Adding to 120142621 its reverse (126241021), we get a palindrome (246383642).

The spelling of 120142621 in words is "one hundred twenty million, one hundred forty-two thousand, six hundred twenty-one".