11742431 has 4 divisors (see below), whose sum is σ = 12059832. Its totient is φ = 11425032.

The previous prime is 11742421. The next prime is 11742457. The reversal of 11742431 is 13424711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13424711 = 103 ⋅130337.

It is a cyclic number.

It is not a de Polignac number, because 11742431 - 2¹⁴ = 11726047 is a prime.

It is a super-2 number, since 2×11742431² = 275769371579522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11742397 and 11742406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11742421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158645 + ... + 158718.

It is an arithmetic number, because the mean of its divisors is an integer number (3014958).

Almost surely, 2^11742431 is an apocalyptic number.

11742431 is a deficient number, since it is larger than the sum of its proper divisors (317401).

11742431 is an equidigital number, since it uses as much as digits as its factorization.

11742431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317400.

The product of its digits is 672, while the sum is 23.

The square root of 11742431 is about 3426.7230702232. The cubic root of 11742431 is about 227.2929710986.

The spelling of 11742431 in words is "eleven million, seven hundred forty-two thousand, four hundred thirty-one".