420251051 has 8 divisors (see below), whose sum is σ = 458818608. Its totient is φ = 381744000.

The previous prime is 420251047. The next prime is 420251077. The reversal of 420251051 is 150152024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420251051 - 2² = 420251047 is a prime.

It is a super-2 number, since 2×420251051² = 353221891733209202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420251651) 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 7 ways as a sum of consecutive naturals, for example, 71 + ... + 28991.

It is an arithmetic number, because the mean of its divisors is an integer number (57352326).

Almost surely, 2^420251051 is an apocalyptic number.

420251051 is a deficient number, since it is larger than the sum of its proper divisors (38567557).

420251051 is a wasteful number, since it uses less digits than its factorization.

420251051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30253.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 420251051 is about 20500.0256341303. The cubic root of 420251051 is about 749.0364224063.

The spelling of 420251051 in words is "four hundred twenty million, two hundred fifty-one thousand, fifty-one".