420733457 has 16 divisors (see below), whose sum is σ = 463761408. Its totient is φ = 380373840.

The previous prime is 420733447. The next prime is 420733471. The reversal of 420733457 is 754337024.

It is a cyclic number.

It is not a de Polignac number, because 420733457 - 2⁴ = 420733441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420733427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23798 + ... + 37520.

It is an arithmetic number, because the mean of its divisors is an integer number (28985088).

Almost surely, 2^420733457 is an apocalyptic number.

It is an amenable number.

420733457 is a deficient number, since it is larger than the sum of its proper divisors (43027951).

420733457 is a wasteful number, since it uses less digits than its factorization.

420733457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13820.

The product of its (nonzero) digits is 70560, while the sum is 35.

The square root of 420733457 is about 20511.7882448118. The cubic root of 420733457 is about 749.3229190065.

The spelling of 420733457 in words is "four hundred twenty million, seven hundred thirty-three thousand, four hundred fifty-seven".