420255151 has 4 divisors (see below), whose sum is σ = 420404904. Its totient is φ = 420105400.

The previous prime is 420255137. The next prime is 420255161. The reversal of 420255151 is 151552024.

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 420255151 - 2¹¹ = 420253103 is a prime.

It is a super-2 number, since 2×420255151² = 353228783884065602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420255161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70585 + ... + 76306.

It is an arithmetic number, because the mean of its divisors is an integer number (105101226).

Almost surely, 2^420255151 is an apocalyptic number.

420255151 is a deficient number, since it is larger than the sum of its proper divisors (149753).

420255151 is a wasteful number, since it uses less digits than its factorization.

420255151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149752.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 420255151 is about 20500.1256337614. The cubic root of 420255151 is about 749.0388582831.

The spelling of 420255151 in words is "four hundred twenty million, two hundred fifty-five thousand, one hundred fifty-one".