2542040421 has 8 divisors (see below), whose sum is σ = 3391253760. Its totient is φ = 1693760352.

The previous prime is 2542040411. The next prime is 2542040441. The reversal of 2542040421 is 1240402452.

It is a happy number.

2542040421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2542040421 - 2²⁵ = 2508485989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2542040391 and 2542040400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542040411) 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, 226936 + ... + 237873.

It is an arithmetic number, because the mean of its divisors is an integer number (423906720).

Almost surely, 2^2542040421 is an apocalyptic number.

It is an amenable number.

2542040421 is a deficient number, since it is larger than the sum of its proper divisors (849213339).

2542040421 is a wasteful number, since it uses less digits than its factorization.

2542040421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466635.

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

The square root of 2542040421 is about 50418.6515190559. The cubic root of 2542040421 is about 1364.7742422061.

Adding to 2542040421 its reverse (1240402452), we get a palindrome (3782442873).

The spelling of 2542040421 in words is "two billion, five hundred forty-two million, forty thousand, four hundred twenty-one".