2405138 has 4 divisors (see below), whose sum is σ = 3607710. Its totient is φ = 1202568.

The previous prime is 2405107. The next prime is 2405141. The reversal of 2405138 is 8315042.

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., 2053489 + 351649 = 1433^2 + 593^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601283 + ... + 601286.

2^2405138 is an apocalyptic number.

2405138 is a deficient number, since it is larger than the sum of its proper divisors (1202572).

2405138 is a wasteful number, since it uses less digits than its factorization.

2405138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202571.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2405138 is about 1550.8507342746. The cubic root of 2405138 is about 133.9820648752.

The spelling of 2405138 in words is "two million, four hundred five thousand, one hundred thirty-eight".