2405542 has 4 divisors (see below), whose sum is σ = 3608316. Its totient is φ = 1202770.

The previous prime is 2405539. The next prime is 2405561. The reversal of 2405542 is 2455042.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 601384 + ... + 601387.

It is an arithmetic number, because the mean of its divisors is an integer number (902079).

2^2405542 is an apocalyptic number.

2405542 is a deficient number, since it is larger than the sum of its proper divisors (1202774).

2405542 is a wasteful number, since it uses less digits than its factorization.

2405542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202773.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2405542 is about 1550.9809798963. The cubic root of 2405542 is about 133.9895662775.

The spelling of 2405542 in words is "two million, four hundred five thousand, five hundred forty-two".