1357403 has 4 divisors (see below), whose sum is σ = 1404240. Its totient is φ = 1310568.

The previous prime is 1357361. The next prime is 1357423. The reversal of 1357403 is 3047531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1357403 - 2¹⁴ = 1341019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357423) 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, 23375 + ... + 23432.

It is an arithmetic number, because the mean of its divisors is an integer number (351060).

2^1357403 is an apocalyptic number.

1357403 is a deficient number, since it is larger than the sum of its proper divisors (46837).

1357403 is an equidigital number, since it uses as much as digits as its factorization.

1357403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46836.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 1357403 is about 1165.0763923452. The cubic root of 1357403 is about 110.7225981767.

The spelling of 1357403 in words is "one million, three hundred fifty-seven thousand, four hundred three".