104142261 has 4 divisors (see below), whose sum is σ = 138856352. Its totient is φ = 69428172.

The previous prime is 104142251. The next prime is 104142263. The reversal of 104142261 is 162241401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 104142261 - 2⁹ = 104141749 is a prime.

It is a super-2 number, since 2×104142261² = 21691221052384242, 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 (104142263) 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, 17357041 + ... + 17357046.

It is an arithmetic number, because the mean of its divisors is an integer number (34714088).

Almost surely, 2^104142261 is an apocalyptic number.

It is an amenable number.

104142261 is a deficient number, since it is larger than the sum of its proper divisors (34714091).

104142261 is an equidigital number, since it uses as much as digits as its factorization.

104142261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34714090.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 104142261 is about 10205.0115629528. The cubic root of 104142261 is about 470.4812649917.

Adding to 104142261 its reverse (162241401), we get a palindrome (266383662).

The spelling of 104142261 in words is "one hundred four million, one hundred forty-two thousand, two hundred sixty-one".