8457542 has 4 divisors (see below), whose sum is σ = 12686316. Its totient is φ = 4228770.

The previous prime is 8457539. The next prime is 8457563. The reversal of 8457542 is 2457548.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114384 + ... + 2114387.

It is an arithmetic number, because the mean of its divisors is an integer number (3171579).

Almost surely, 2^8457542 is an apocalyptic number.

8457542 is a deficient number, since it is larger than the sum of its proper divisors (4228774).

8457542 is a wasteful number, since it uses less digits than its factorization.

8457542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228773.

The product of its digits is 44800, while the sum is 35.

The square root of 8457542 is about 2908.1853448499. The cubic root of 8457542 is about 203.7423859551.

The spelling of 8457542 in words is "eight million, four hundred fifty-seven thousand, five hundred forty-two".