420070750 has 32 divisors (see below), whose sum is σ = 857866464. Its totient is φ = 152752000.

The previous prime is 420070747. The next prime is 420070751. The reversal of 420070750 is 57070024.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420070751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73627 + ... + 79126.

It is an arithmetic number, because the mean of its divisors is an integer number (26808327).

Almost surely, 2^420070750 is an apocalyptic number.

420070750 is an abundant number, since it is smaller than the sum of its proper divisors (437795714).

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

420070750 is a wasteful number, since it uses less digits than its factorization.

420070750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152781 (or 152771 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 420070750 is about 20495.6275824870. The cubic root of 420070750 is about 748.9292869737.

The spelling of 420070750 in words is "four hundred twenty million, seventy thousand, seven hundred fifty".