12240961 has 6 divisors (see below), whose sum is σ = 12342230. Its totient is φ = 12140448.

The previous prime is 12240953. The next prime is 12240973. The reversal of 12240961 is 16904221.

It can be written as a sum of positive squares in 3 ways, for example, as 9884736 + 2356225 = 3144^2 + 1535^2 .

It is not a de Polignac number, because 12240961 - 2³ = 12240953 is a prime.

It is a super-2 number, since 2×12240961² = 299682252407042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12240911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29725 + ... + 30133.

Almost surely, 2^12240961 is an apocalyptic number.

It is an amenable number.

12240961 is a deficient number, since it is larger than the sum of its proper divisors (101269).

12240961 is an frugal number, since it uses more digits than its factorization.

12240961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12240961 is about 3498.7084759951. The cubic root of 12240961 is about 230.4651016942.

The spelling of 12240961 in words is "twelve million, two hundred forty thousand, nine hundred sixty-one".