4257420 has 24 divisors (see below), whose sum is σ = 11920944. Its totient is φ = 1135296.

The previous prime is 4257413. The next prime is 4257467. The reversal of 4257420 is 247524.

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, 35419 + ... + 35538.

It is an arithmetic number, because the mean of its divisors is an integer number (496706).

Almost surely, 2^4257420 is an apocalyptic number.

It is an amenable number.

4257420 is an abundant number, since it is smaller than the sum of its proper divisors (7663524).

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

4257420 is a wasteful number, since it uses less digits than its factorization.

4257420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70969 (or 70967 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 4257420 is about 2063.3516423528. The cubic root of 4257420 is about 162.0748016089.

The spelling of 4257420 in words is "four million, two hundred fifty-seven thousand, four hundred twenty".