2542858 has 4 divisors (see below), whose sum is σ = 3814290. Its totient is φ = 1271428.

The previous prime is 2542853. The next prime is 2542879. The reversal of 2542858 is 8582452.

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

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 431649 = 1453^2 + 657^2 .

It is a super-2 number, since 2×2542858² = 12932253616328, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2542853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635713 + ... + 635716.

2^2542858 is an apocalyptic number.

2542858 is a deficient number, since it is larger than the sum of its proper divisors (1271432).

2542858 is a wasteful number, since it uses less digits than its factorization.

2542858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271431.

The product of its digits is 25600, while the sum is 34.

The square root of 2542858 is about 1594.6341273157. The cubic root of 2542858 is about 136.4920540845.

The spelling of 2542858 in words is "two million, five hundred forty-two thousand, eight hundred fifty-eight".