105442531 has 2 divisors, whose sum is σ = 105442532. Its totient is φ = 105442530.

The previous prime is 105442507. The next prime is 105442541. The reversal of 105442531 is 135244501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105442531 - 2¹⁵ = 105409763 is a prime.

It is a super-2 number, since 2×105442531² = 22236254687371922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105442496 and 105442505.

It is not a weakly prime, because it can be changed into another prime (105442541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52721265 + 52721266.

It is an arithmetic number, because the mean of its divisors is an integer number (52721266).

Almost surely, 2^105442531 is an apocalyptic number.

105442531 is a deficient number, since it is larger than the sum of its proper divisors (1).

105442531 is an equidigital number, since it uses as much as digits as its factorization.

105442531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 105442531 is about 10268.5213638576. The cubic root of 105442531 is about 472.4312392125.

The spelling of 105442531 in words is "one hundred five million, four hundred forty-two thousand, five hundred thirty-one".