420743236 has 6 divisors (see below), whose sum is σ = 736300670. Its totient is φ = 210371616.

The previous prime is 420743227. The next prime is 420743269. The reversal of 420743236 is 632347024.

It can be written as a sum of positive squares in only one way, i.e., 403768836 + 16974400 = 20094^2 + 4120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420743198 and 420743207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52592901 + ... + 52592908.

Almost surely, 2^420743236 is an apocalyptic number.

It is an amenable number.

420743236 is a deficient number, since it is larger than the sum of its proper divisors (315557434).

420743236 is a wasteful number, since it uses less digits than its factorization.

420743236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105185813 (or 105185811 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 420743236 is about 20512.0266185475. The cubic root of 420743236 is about 749.3287244017.

The spelling of 420743236 in words is "four hundred twenty million, seven hundred forty-three thousand, two hundred thirty-six".