42305131 has 4 divisors (see below), whose sum is σ = 46151064. Its totient is φ = 38459200.

The previous prime is 42305101. The next prime is 42305141. The reversal of 42305131 is 13150324.

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

It is a cyclic number.

It is not a de Polignac number, because 42305131 - 2¹³ = 42296939 is a prime.

It is a super-2 number, since 2×42305131² = 3579448217854322, 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 = 42305099 and 42305108.

It is not an unprimeable number, because it can be changed into a prime (42305101) 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, 1922950 + ... + 1922971.

It is an arithmetic number, because the mean of its divisors is an integer number (11537766).

Almost surely, 2^42305131 is an apocalyptic number.

42305131 is a deficient number, since it is larger than the sum of its proper divisors (3845933).

42305131 is a wasteful number, since it uses less digits than its factorization.

42305131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845932.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 42305131 is about 6504.2394636114. The cubic root of 42305131 is about 348.4424147027.

Adding to 42305131 its reverse (13150324), we get a palindrome (55455455).

It can be divided in two parts, 42305 and 131, that added together give a square (42436 = 206²).

The spelling of 42305131 in words is "forty-two million, three hundred five thousand, one hundred thirty-one".