2542730 has 16 divisors (see below), whose sum is σ = 4629960. Its totient is φ = 1005312.

The previous prime is 2542703. The next prime is 2542733. The reversal of 2542730 is 372452.

It can be written as a sum of positive squares in 4 ways, for example, as 1868689 + 674041 = 1367^2 + 821^2 .

It is a super-3 number, since 3×2542730³ = 49319878246333251000, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2542696 and 2542705.

It is not an unprimeable number, because it can be changed into a prime (2542733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539 + ... + 2318.

2^2542730 is an apocalyptic number.

2542730 is a deficient number, since it is larger than the sum of its proper divisors (2087230).

2542730 is a wasteful number, since it uses less digits than its factorization.

2542730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 2542730 is about 1594.5939922124. The cubic root of 2542730 is about 136.4897638431.

The spelling of 2542730 in words is "two million, five hundred forty-two thousand, seven hundred thirty".