42011231 has 8 divisors (see below), whose sum is σ = 43474944. Its totient is φ = 40554360.

The previous prime is 42011213. The next prime is 42011251. The reversal of 42011231 is 13211024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42011231 - 2¹⁴ = 41994847 is a prime.

It is a super-2 number, since 2×42011231² = 3529887060270722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42011201) 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 7 ways as a sum of consecutive naturals, for example, 12890 + ... + 15816.

It is an arithmetic number, because the mean of its divisors is an integer number (5434368).

Almost surely, 2^42011231 is an apocalyptic number.

42011231 is a deficient number, since it is larger than the sum of its proper divisors (1463713).

42011231 is a wasteful number, since it uses less digits than its factorization.

42011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 42011231 is about 6481.6071309514. The cubic root of 42011231 is about 347.6336452633.

Adding to 42011231 its reverse (13211024), we get a palindrome (55222255).

The spelling of 42011231 in words is "forty-two million, eleven thousand, two hundred thirty-one".