2142049451 has 2 divisors, whose sum is σ = 2142049452. Its totient is φ = 2142049450.

The previous prime is 2142049447. The next prime is 2142049489. The reversal of 2142049451 is 1549402412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2142049451 - 2² = 2142049447 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142049411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071024725 + 1071024726.

It is an arithmetic number, because the mean of its divisors is an integer number (1071024726).

Almost surely, 2^2142049451 is an apocalyptic number.

2142049451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142049451 is an equidigital number, since it uses as much as digits as its factorization.

2142049451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2142049451 is about 46282.2800972467. The cubic root of 2142049451 is about 1289.0699886946.

The spelling of 2142049451 in words is "two billion, one hundred forty-two million, forty-nine thousand, four hundred fifty-one".