2142744621 has 16 divisors (see below), whose sum is σ = 2947186368. Its totient is φ = 1384099200.

The previous prime is 2142744619. The next prime is 2142744623. The reversal of 2142744621 is 1264472412.

It is an interprime number because it is at equal distance from previous prime (2142744619) and next prime (2142744623).

It is not a de Polignac number, because 2142744621 - 2¹ = 2142744619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142744623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75120 + ... + 99641.

It is an arithmetic number, because the mean of its divisors is an integer number (184199148).

Almost surely, 2^2142744621 is an apocalyptic number.

It is an amenable number.

2142744621 is a deficient number, since it is larger than the sum of its proper divisors (804441747).

2142744621 is a wasteful number, since it uses less digits than its factorization.

2142744621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174892.

The product of its digits is 21504, while the sum is 33.

The square root of 2142744621 is about 46289.7895977072. The cubic root of 2142744621 is about 1289.2094230511.

The spelling of 2142744621 in words is "two billion, one hundred forty-two million, seven hundred forty-four thousand, six hundred twenty-one".