12140690 has 16 divisors (see below), whose sum is σ = 21916440. Its totient is φ = 4842240.

The previous prime is 12140683. The next prime is 12140693. The reversal of 12140690 is 9604121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3736489 + 8404201 = 1933^2 + 2899^2 .

It is a super-2 number, since 2×12140690² = 294792707352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12140693) 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, 2330 + ... + 5450.

Almost surely, 2^12140690 is an apocalyptic number.

12140690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12140690 is a deficient number, since it is larger than the sum of its proper divisors (9775750).

12140690 is a wasteful number, since it uses less digits than its factorization.

12140690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12140690 is about 3484.3492936271. The cubic root of 12140690 is about 229.8340958594.

The spelling of 12140690 in words is "twelve million, one hundred forty thousand, six hundred ninety".