2540423451 has 8 divisors (see below), whose sum is σ = 3396828240. Its totient is φ = 1688817152.

The previous prime is 2540423429. The next prime is 2540423477. The reversal of 2540423451 is 1543240452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2540423451 - 2⁷ = 2540423323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2540423491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198386 + ... + 1200503.

It is an arithmetic number, because the mean of its divisors is an integer number (424603530).

Almost surely, 2^2540423451 is an apocalyptic number.

2540423451 is a deficient number, since it is larger than the sum of its proper divisors (856404789).

2540423451 is a wasteful number, since it uses less digits than its factorization.

2540423451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399245.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2540423451 is about 50402.6135334270. The cubic root of 2540423451 is about 1364.4848071179.

The spelling of 2540423451 in words is "two billion, five hundred forty million, four hundred twenty-three thousand, four hundred fifty-one".