2040424251 has 4 divisors (see below), whose sum is σ = 2720565672. Its totient is φ = 1360282832.

The previous prime is 2040424249. The next prime is 2040424289. The reversal of 2040424251 is 1524240402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2040424251 - 2¹ = 2040424249 is a prime.

It is a super-2 number, since 2×2040424251² = 8326662248137822002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2040423251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340070706 + ... + 340070711.

It is an arithmetic number, because the mean of its divisors is an integer number (680141418).

Almost surely, 2^2040424251 is an apocalyptic number.

2040424251 is a deficient number, since it is larger than the sum of its proper divisors (680141421).

2040424251 is an equidigital number, since it uses as much as digits as its factorization.

2040424251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680141420.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2040424251 is about 45171.0554559001. The cubic root of 2040424251 is about 1268.3530537337.

Adding to 2040424251 its reverse (1524240402), we get a palindrome (3564664653).

The spelling of 2040424251 in words is "two billion, forty million, four hundred twenty-four thousand, two hundred fifty-one".