11811742 has 16 divisors (see below), whose sum is σ = 18561312. Its totient is φ = 5626720.

The previous prime is 11811721. The next prime is 11811763. The reversal of 11811742 is 24711811.

It is an interprime number because it is at equal distance from previous prime (11811721) and next prime (11811763).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20928 + ... + 21484.

It is an arithmetic number, because the mean of its divisors is an integer number (1160082).

Almost surely, 2^11811742 is an apocalyptic number.

11811742 is a deficient number, since it is larger than the sum of its proper divisors (6749570).

11811742 is a wasteful number, since it uses less digits than its factorization.

11811742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its digits is 448, while the sum is 25.

The square root of 11811742 is about 3436.8214966739. The cubic root of 11811742 is about 227.7393013908.

The spelling of 11811742 in words is "eleven million, eight hundred eleven thousand, seven hundred forty-two".