2021432144 has 10 divisors (see below), whose sum is σ = 3916524810. Its totient is φ = 1010716064.

The previous prime is 2021432129. The next prime is 2021432183. The reversal of 2021432144 is 4412341202.

It can be written as a sum of positive squares in only one way, i.e., 1979182144 + 42250000 = 44488^2 + 6500^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63169739 + ... + 63169770.

It is an arithmetic number, because the mean of its divisors is an integer number (391652481).

Almost surely, 2^2021432144 is an apocalyptic number.

It is an amenable number.

2021432144 is a deficient number, since it is larger than the sum of its proper divisors (1895092666).

2021432144 is a wasteful number, since it uses less digits than its factorization.

2021432144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126339517 (or 126339511 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2021432144 is about 44960.3396784321. The cubic root of 2021432144 is about 1264.4055373694.

Adding to 2021432144 its reverse (4412341202), we get a palindrome (6433773346).

The spelling of 2021432144 in words is "two billion, twenty-one million, four hundred thirty-two thousand, one hundred forty-four".