1457139 has 8 divisors (see below), whose sum is σ = 1953792. Its totient is φ = 965960.

The previous prime is 1457111. The next prime is 1457143. The reversal of 1457139 is 9317541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1457139 - 2⁷ = 1457011 is a prime.

1457139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1457149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (244224).

2^1457139 is an apocalyptic number.

1457139 is a deficient number, since it is larger than the sum of its proper divisors (496653).

1457139 is a wasteful number, since it uses less digits than its factorization.

1457139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737.

The product of its digits is 3780, while the sum is 30.

The square root of 1457139 is about 1207.1201265823. The cubic root of 1457139 is about 113.3705692718.

It can be divided in two parts, 1457 and 139, that added together give a triangular number (1596 = T₅₆).

The spelling of 1457139 in words is "one million, four hundred fifty-seven thousand, one hundred thirty-nine".