420157445 has 16 divisors (see below), whose sum is σ = 527627520. Its totient is φ = 320584704.

The previous prime is 420157427. The next prime is 420157453. The reversal of 420157445 is 544751024.

It is a cyclic number.

It is not a de Polignac number, because 420157445 - 2²⁰ = 419108869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36197 + ... + 46373.

It is an arithmetic number, because the mean of its divisors is an integer number (32976720).

Almost surely, 2^420157445 is an apocalyptic number.

It is an amenable number.

420157445 is a deficient number, since it is larger than the sum of its proper divisors (107470075).

420157445 is a wasteful number, since it uses less digits than its factorization.

420157445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10564.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 420157445 is about 20497.7424366685. The cubic root of 420157445 is about 748.9808052464.

The spelling of 420157445 in words is "four hundred twenty million, one hundred fifty-seven thousand, four hundred forty-five".