2142023090 has 16 divisors (see below), whose sum is σ = 3928390488. Its totient is φ = 840642816.

The previous prime is 2142023071. The next prime is 2142023099. The reversal of 2142023090 is 903202412.

It can be written as a sum of positive squares in 4 ways, for example, as 1697192809 + 444830281 = 41197^2 + 21091^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2142023099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020247 + ... + 2021306.

Almost surely, 2^2142023090 is an apocalyptic number.

2142023090 is a deficient number, since it is larger than the sum of its proper divisors (1786367398).

2142023090 is a wasteful number, since it uses less digits than its factorization.

2142023090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041613.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2142023090 is about 46281.9953113519. The cubic root of 2142023090 is about 1289.0647007194.

The spelling of 2142023090 in words is "two billion, one hundred forty-two million, twenty-three thousand, ninety".