420201457 has 4 divisors (see below), whose sum is σ = 452524660. Its totient is φ = 387878256.

The previous prime is 420201443. The next prime is 420201487. The reversal of 420201457 is 754102024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 245987856 + 174213601 = 15684^2 + 13199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420201457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420201487) 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, 16161582 + ... + 16161607.

It is an arithmetic number, because the mean of its divisors is an integer number (113131165).

Almost surely, 2^420201457 is an apocalyptic number.

It is an amenable number.

420201457 is a deficient number, since it is larger than the sum of its proper divisors (32323203).

420201457 is a wasteful number, since it uses less digits than its factorization.

420201457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32323202.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 420201457 is about 20498.8159901981. The cubic root of 420201457 is about 749.0069565481.

The spelling of 420201457 in words is "four hundred twenty million, two hundred one thousand, four hundred fifty-seven".