2540340402 has 16 divisors (see below), whose sum is σ = 5204600352. Its totient is φ = 826126880.

The previous prime is 2540340389. The next prime is 2540340427. The reversal of 2540340402 is 2040430452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5163048 + ... + 5163539.

It is an arithmetic number, because the mean of its divisors is an integer number (325287522).

Almost surely, 2^2540340402 is an apocalyptic number.

2540340402 is an abundant number, since it is smaller than the sum of its proper divisors (2664259950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2540340402 is a wasteful number, since it uses less digits than its factorization.

2540340402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10326633.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 2540340402 is about 50401.7896706059. The cubic root of 2540340402 is about 1364.4699381619.

Adding to 2540340402 its reverse (2040430452), we get a palindrome (4580770854).

The spelling of 2540340402 in words is "two billion, five hundred forty million, three hundred forty thousand, four hundred two".