420753406 has 16 divisors (see below), whose sum is σ = 636828480. Its totient is φ = 208484640.

The previous prime is 420753401. The next prime is 420753479. The reversal of 420753406 is 604357024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420753401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133780 + ... + 136888.

It is an arithmetic number, because the mean of its divisors is an integer number (39801780).

Almost surely, 2^420753406 is an apocalyptic number.

420753406 is a deficient number, since it is larger than the sum of its proper divisors (216075074).

420753406 is a wasteful number, since it uses less digits than its factorization.

420753406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 420753406 is about 20512.2745203939. The cubic root of 420753406 is about 749.3347618224.

The spelling of 420753406 in words is "four hundred twenty million, seven hundred fifty-three thousand, four hundred six".