420075730 has 32 divisors (see below), whose sum is σ = 807459840. Its totient is φ = 156999360.

The previous prime is 420075727. The next prime is 420075737. The reversal of 420075730 is 37570024.

It is not an unprimeable number, because it can be changed into a prime (420075737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14374 + ... + 32353.

It is an arithmetic number, because the mean of its divisors is an integer number (25233120).

Almost surely, 2^420075730 is an apocalyptic number.

420075730 is a deficient number, since it is larger than the sum of its proper divisors (387384110).

420075730 is a wasteful number, since it uses less digits than its factorization.

420075730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46794.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 420075730 is about 20495.7490714538. The cubic root of 420075730 is about 748.9322465173.

The spelling of 420075730 in words is "four hundred twenty million, seventy-five thousand, seven hundred thirty".