102442133 has 4 divisors (see below), whose sum is σ = 102497760. Its totient is φ = 102386508.

The previous prime is 102442127. The next prime is 102442147. The reversal of 102442133 is 331244201.

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 not a de Polignac number, because 102442133 - 2¹⁶ = 102376597 is a prime.

It is a super-2 number, since 2×102442133² = 20988781227179378, 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 (102442103) 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, 24953 + ... + 28766.

It is an arithmetic number, because the mean of its divisors is an integer number (25624440).

Almost surely, 2^102442133 is an apocalyptic number.

It is an amenable number.

102442133 is a deficient number, since it is larger than the sum of its proper divisors (55627).

102442133 is an equidigital number, since it uses as much as digits as its factorization.

102442133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55626.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 102442133 is about 10121.3701147621. The cubic root of 102442133 is about 467.9069947528.

Adding to 102442133 its reverse (331244201), we get a palindrome (433686334).

The spelling of 102442133 in words is "one hundred two million, four hundred forty-two thousand, one hundred thirty-three".