42471131 has 2 divisors, whose sum is σ = 42471132. Its totient is φ = 42471130.

The previous prime is 42471103. The next prime is 42471139. The reversal of 42471131 is 13117424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42471131 - 2¹⁰ = 42470107 is a prime.

It is a super-2 number, since 2×42471131² = 3607593936838322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42471097 and 42471106.

It is not a weakly prime, because it can be changed into another prime (42471139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21235565 + 21235566.

It is an arithmetic number, because the mean of its divisors is an integer number (21235566).

Almost surely, 2^42471131 is an apocalyptic number.

42471131 is a deficient number, since it is larger than the sum of its proper divisors (1).

42471131 is an equidigital number, since it uses as much as digits as its factorization.

42471131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 42471131 is about 6516.9878778466. The cubic root of 42471131 is about 348.8975679335.

Adding to 42471131 its reverse (13117424), we get a palindrome (55588555).

The spelling of 42471131 in words is "forty-two million, four hundred seventy-one thousand, one hundred thirty-one".