120245421 has 16 divisors (see below), whose sum is σ = 162518400. Its totient is φ = 79075008.

The previous prime is 120245401. The next prime is 120245429. The reversal of 120245421 is 124542021.

It is not a de Polignac number, because 120245421 - 2⁹ = 120244909 is a prime.

It is a super-2 number, since 2×120245421² = 28917922542934482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120245429) 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, 87280 + ... + 88646.

It is an arithmetic number, because the mean of its divisors is an integer number (10157400).

Almost surely, 2^120245421 is an apocalyptic number.

It is an amenable number.

120245421 is a deficient number, since it is larger than the sum of its proper divisors (42272979).

120245421 is a wasteful number, since it uses less digits than its factorization.

120245421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

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

The square root of 120245421 is about 10965.6473133144. The cubic root of 120245421 is about 493.5784415776.

Adding to 120245421 its reverse (124542021), we get a palindrome (244787442).

The spelling of 120245421 in words is "one hundred twenty million, two hundred forty-five thousand, four hundred twenty-one".