120420250005 has 32 divisors (see below), whose sum is σ = 221250608640. Its totient is φ = 55312649280.

The previous prime is 120420249997. The next prime is 120420250009. The reversal of 120420250005 is 500052024021.

It is a happy number.

It is not a de Polignac number, because 120420250005 - 2³ = 120420249997 is a prime.

It is a super-2 number, since 2×120420250005² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120420250009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19202647 + ... + 19208916.

It is an arithmetic number, because the mean of its divisors is an integer number (6914081520).

Almost surely, 2^120420250005 is an apocalyptic number.

120420250005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120420250005 is a deficient number, since it is larger than the sum of its proper divisors (100830358635).

120420250005 is a wasteful number, since it uses less digits than its factorization.

120420250005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38411601.

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 120420250005 its reverse (500052024021), we get a palindrome (620472274026).

The spelling of 120420250005 in words is "one hundred twenty billion, four hundred twenty million, two hundred fifty thousand, five".