88142261 has 4 divisors (see below), whose sum is σ = 88162272. Its totient is φ = 88122252.

The previous prime is 88142221. The next prime is 88142267. The reversal of 88142261 is 16224188.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88142261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88142267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185 + ... + 13278.

It is an arithmetic number, because the mean of its divisors is an integer number (22040568).

Almost surely, 2^88142261 is an apocalyptic number.

It is an amenable number.

88142261 is a deficient number, since it is larger than the sum of its proper divisors (20011).

88142261 is a wasteful number, since it uses less digits than its factorization.

88142261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010.

The product of its digits is 6144, while the sum is 32.

The square root of 88142261 is about 9388.4109944122. The cubic root of 88142261 is about 445.0355751553.

The spelling of 88142261 in words is "eighty-eight million, one hundred forty-two thousand, two hundred sixty-one".