1042157 has 4 divisors (see below), whose sum is σ = 1046976. Its totient is φ = 1037340.

The previous prime is 1042141. The next prime is 1042183. The reversal of 1042157 is 7512401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1042157 - 2⁴ = 1042141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042187) 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, 2069 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (261744).

2^1042157 is an apocalyptic number.

It is an amenable number.

1042157 is a deficient number, since it is larger than the sum of its proper divisors (4819).

1042157 is an equidigital number, since it uses as much as digits as its factorization.

1042157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1042157 is about 1020.8609111921. The cubic root of 1042157 is about 101.3859363985.

Adding to 1042157 its reverse (7512401), we get a palindrome (8554558).

The spelling of 1042157 in words is "one million, forty-two thousand, one hundred fifty-seven".