1157403 has 16 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 698784.

The previous prime is 1157393. The next prime is 1157413. The reversal of 1157403 is 3047511.

It is an interprime number because it is at equal distance from previous prime (1157393) and next prime (1157413).

It is not a de Polignac number, because 1157403 - 2⁶ = 1157339 is a prime.

1157403 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157403.

It is not an unprimeable number, because it can be changed into a prime (1157413) 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, 2050 + ... + 2552.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2^1157403 is an apocalyptic number.

1157403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1157403 is a deficient number, since it is larger than the sum of its proper divisors (536037).

1157403 is a wasteful number, since it uses less digits than its factorization.

1157403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1157403 is about 1075.8266589000. The cubic root of 1157403 is about 104.9932875528.

The spelling of 1157403 in words is "one million, one hundred fifty-seven thousand, four hundred three".