1457420 has 12 divisors (see below), whose sum is σ = 3060624. Its totient is φ = 582960.

The previous prime is 1457419. The next prime is 1457429. The reversal of 1457420 is 247541.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1457429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36416 + ... + 36455.

It is an arithmetic number, because the mean of its divisors is an integer number (255052).

2^1457420 is an apocalyptic number.

1457420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1457420 is an abundant number, since it is smaller than the sum of its proper divisors (1603204).

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

1457420 is a wasteful number, since it uses less digits than its factorization.

1457420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72880 (or 72878 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1457420 is about 1207.2365136956. The cubic root of 1457420 is about 113.3778564015.

The spelling of 1457420 in words is "one million, four hundred fifty-seven thousand, four hundred twenty".