421245956 has 24 divisors (see below), whose sum is σ = 745091256. Its totient is φ = 208373760.

The previous prime is 421245947. The next prime is 421245983. The reversal of 421245956 is 659542124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54523456 + 366722500 = 7384^2 + 19150^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183536 + ... + 185816.

It is an arithmetic number, because the mean of its divisors is an integer number (31045469).

Almost surely, 2^421245956 is an apocalyptic number.

It is an amenable number.

421245956 is a deficient number, since it is larger than the sum of its proper divisors (323845300).

421245956 is a wasteful number, since it uses less digits than its factorization.

421245956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2757 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 421245956 is about 20524.2772345337. The cubic root of 421245956 is about 749.6270477581.

The spelling of 421245956 in words is "four hundred twenty-one million, two hundred forty-five thousand, nine hundred fifty-six".