1423209204 has 42 divisors (see below), whose sum is σ = 3734223570. Its totient is φ = 474402096.

The previous prime is 1423209173. The next prime is 1423209211. The reversal of 1423209204 is 4029023241.

It can be written as a sum of positive squares in only one way, i.e., 921001104 + 502208100 = 30348^2 + 22410^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 241119 + ... + 246950.

It is an arithmetic number, because the mean of its divisors is an integer number (88910085).

Almost surely, 2^1423209204 is an apocalyptic number.

It is an amenable number.

1423209204 is an abundant number, since it is smaller than the sum of its proper divisors (2311014366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423209204 is an equidigital number, since it uses as much as digits as its factorization.

1423209204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488091 (or 488074 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1423209204 is about 37725.4450470766. The cubic root of 1423209204 is about 1124.8369683751.

The spelling of 1423209204 in words is "one billion, four hundred twenty-three million, two hundred nine thousand, two hundred four".