2542021043 has 2 divisors, whose sum is σ = 2542021044. Its totient is φ = 2542021042.

The previous prime is 2542021007. The next prime is 2542021051. The reversal of 2542021043 is 3401202452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2542021043 - 2⁶ = 2542020979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2542021003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271010521 + 1271010522.

It is an arithmetic number, because the mean of its divisors is an integer number (1271010522).

Almost surely, 2^2542021043 is an apocalyptic number.

2542021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542021043 is an equidigital number, since it uses as much as digits as its factorization.

2542021043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2542021043 is about 50418.4593477429. The cubic root of 2542021043 is about 1364.7707743013.

Adding to 2542021043 its reverse (3401202452), we get a palindrome (5943223495).

The spelling of 2542021043 in words is "two billion, five hundred forty-two million, twenty-one thousand, forty-three".