420056151 has 4 divisors (see below), whose sum is σ = 560074872. Its totient is φ = 280037432.

The previous prime is 420056137. The next prime is 420056171. The reversal of 420056151 is 151650024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420056151 - 2⁹ = 420055639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420056171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70009356 + ... + 70009361.

It is an arithmetic number, because the mean of its divisors is an integer number (140018718).

Almost surely, 2^420056151 is an apocalyptic number.

420056151 is a deficient number, since it is larger than the sum of its proper divisors (140018721).

420056151 is a wasteful number, since it uses less digits than its factorization.

420056151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140018720.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 420056151 is about 20495.2714302592. The cubic root of 420056151 is about 748.9206108596.

The spelling of 420056151 in words is "four hundred twenty million, fifty-six thousand, one hundred fifty-one".