2142049454 has 4 divisors (see below), whose sum is σ = 3213074184. Its totient is φ = 1071024726.

The previous prime is 2142049451. The next prime is 2142049489. The reversal of 2142049454 is 4549402412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142049451) 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, 535512362 + ... + 535512365.

It is an arithmetic number, because the mean of its divisors is an integer number (803268546).

Almost surely, 2^2142049454 is an apocalyptic number.

2142049454 is a deficient number, since it is larger than the sum of its proper divisors (1071024730).

2142049454 is a wasteful number, since it uses less digits than its factorization.

2142049454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071024729.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2142049454 is about 46282.2801296565. The cubic root of 2142049454 is about 1289.0699892964.

The spelling of 2142049454 in words is "two billion, one hundred forty-two million, forty-nine thousand, four hundred fifty-four".