420783534 has 48 divisors (see below), whose sum is σ = 929869200. Its totient is φ = 137490048.

The previous prime is 420783521. The next prime is 420783547. The reversal of 420783534 is 435387024.

It is a happy number.

420783534 is a `hidden beast` number, since 42 + 0 + 7 + 83 + 534 = 666.

It is an interprime number because it is at equal distance from previous prime (420783521) and next prime (420783547).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234312 + ... + 236100.

It is an arithmetic number, because the mean of its divisors is an integer number (19372275).

Almost surely, 2^420783534 is an apocalyptic number.

420783534 is an abundant number, since it is smaller than the sum of its proper divisors (509085666).

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

420783534 is a wasteful number, since it uses less digits than its factorization.

420783534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 420783534 is about 20513.0088967952. The cubic root of 420783534 is about 749.3526467391.

The spelling of 420783534 in words is "four hundred twenty million, seven hundred eighty-three thousand, five hundred thirty-four".