12142090 has 16 divisors (see below), whose sum is σ = 22156488. Its totient is φ = 4790016.

The previous prime is 12142079. The next prime is 12142093. The reversal of 12142090 is 9024121.

It can be written as a sum of positive squares in 4 ways, for example, as 7935489 + 4206601 = 2817^2 + 2051^2 .

It is not an unprimeable number, because it can be changed into a prime (12142093) 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, 7587 + ... + 9046.

Almost surely, 2^12142090 is an apocalyptic number.

12142090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12142090 is a deficient number, since it is larger than the sum of its proper divisors (10014398).

12142090 is a wasteful number, since it uses less digits than its factorization.

12142090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16713.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12142090 is about 3484.5501861790. The cubic root of 12142090 is about 229.8429299362.

The spelling of 12142090 in words is "twelve million, one hundred forty-two thousand, ninety".