420923090 has 16 divisors (see below), whose sum is σ = 865899072. Its totient is φ = 144316464.

The previous prime is 420923059. The next prime is 420923099. The reversal of 420923090 is 90329024.

It is not an unprimeable number, because it can be changed into a prime (420923099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3006524 + ... + 3006663.

It is an arithmetic number, because the mean of its divisors is an integer number (54118692).

Almost surely, 2^420923090 is an apocalyptic number.

420923090 is an abundant number, since it is smaller than the sum of its proper divisors (444975982).

420923090 is a wasteful number, since it uses less digits than its factorization.

420923090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013201.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 420923090 is about 20516.4102610569. The cubic root of 420923090 is about 749.4354803819.

The spelling of 420923090 in words is "four hundred twenty million, nine hundred twenty-three thousand, ninety".