42130231 has 16 divisors (see below), whose sum is σ = 50002848. Its totient is φ = 34992000.

The previous prime is 42130213. The next prime is 42130241. The reversal of 42130231 is 13203124.

It is a happy number.

It is a 7-Lehmer number, since φ(42130231) divides (42130231-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 42130231 - 2¹⁵ = 42097463 is a prime.

It is a super-2 number, since 2×42130231² = 3549912728226722, 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 (42130211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12985 + ... + 15901.

It is an arithmetic number, because the mean of its divisors is an integer number (3125178).

Almost surely, 2^42130231 is an apocalyptic number.

42130231 is a deficient number, since it is larger than the sum of its proper divisors (7872617).

42130231 is a wasteful number, since it uses less digits than its factorization.

42130231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42130231 is about 6490.7804615470. The cubic root of 42130231 is about 347.9615687291.

Adding to 42130231 its reverse (13203124), we get a palindrome (55333355).

The spelling of 42130231 in words is "forty-two million, one hundred thirty thousand, two hundred thirty-one".