1157542 has 8 divisors (see below), whose sum is σ = 1742832. Its totient is φ = 576600.

The previous prime is 1157539. The next prime is 1157557. The reversal of 1157542 is 2457511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

2^1157542 is an apocalyptic number.

1157542 is a deficient number, since it is larger than the sum of its proper divisors (585290).

1157542 is a wasteful number, since it uses less digits than its factorization.

1157542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174.

The product of its digits is 1400, while the sum is 25.

The square root of 1157542 is about 1075.8912584458. The cubic root of 1157542 is about 104.9974904918.

The spelling of 1157542 in words is "one million, one hundred fifty-seven thousand, five hundred forty-two".