1156542 has 8 divisors (see below), whose sum is σ = 2313096. Its totient is φ = 385512.

The previous prime is 1156541. The next prime is 1156553. The reversal of 1156542 is 2456511.

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

1156542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156541) 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, 96373 + ... + 96384.

It is an arithmetic number, because the mean of its divisors is an integer number (289137).

2^1156542 is an apocalyptic number.

1156542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1156542 is a wasteful number, since it uses less digits than its factorization.

1156542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192762.

The product of its digits is 1200, while the sum is 24.

The square root of 1156542 is about 1075.4264270511. The cubic root of 1156542 is about 104.9672460195.

The spelling of 1156542 in words is "one million, one hundred fifty-six thousand, five hundred forty-two".