42492311 has 4 divisors (see below), whose sum is σ = 42535272. Its totient is φ = 42449352.

The previous prime is 42492301. The next prime is 42492323. The reversal of 42492311 is 11329424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42492311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42492301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19961 + ... + 21986.

It is an arithmetic number, because the mean of its divisors is an integer number (10633818).

Almost surely, 2^42492311 is an apocalyptic number.

42492311 is a deficient number, since it is larger than the sum of its proper divisors (42961).

42492311 is a wasteful number, since it uses less digits than its factorization.

42492311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42960.

The product of its digits is 1728, while the sum is 26.

The square root of 42492311 is about 6518.6126591477. The cubic root of 42492311 is about 348.9555557342.

It can be divided in two parts, 424923 and 11, that multiplied together give a triangular number (4674153 = T₃₀₅₇).

The spelling of 42492311 in words is "forty-two million, four hundred ninety-two thousand, three hundred eleven".