2520040402 has 32 divisors (see below), whose sum is σ = 4327188480. Its totient is φ = 1089509520.

The previous prime is 2520040387. The next prime is 2520040403. The reversal of 2520040402 is 2040400252.

It is a super-3 number, since 3×2520040402³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2520040402.

It is not an unprimeable number, because it can be changed into a prime (2520040403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76663 + ... + 104485.

It is an arithmetic number, because the mean of its divisors is an integer number (135224640).

Almost surely, 2^2520040402 is an apocalyptic number.

2520040402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2520040402 is a deficient number, since it is larger than the sum of its proper divisors (1807148078).

2520040402 is a wasteful number, since it uses less digits than its factorization.

2520040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28038.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2520040402 is about 50200.0040039839. The cubic root of 2520040402 is about 1360.8256956103.

Adding to 2520040402 its reverse (2040400252), we get a palindrome (4560440654).

The spelling of 2520040402 in words is "two billion, five hundred twenty million, forty thousand, four hundred two".