102226442 has 4 divisors (see below), whose sum is σ = 153339666. Its totient is φ = 51113220.

The previous prime is 102226433. The next prime is 102226451. The reversal of 102226442 is 244622201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244622201 = 59 ⋅4146139.

It is an interprime number because it is at equal distance from previous prime (102226433) and next prime (102226451).

It can be written as a sum of positive squares in only one way, i.e., 101828281 + 398161 = 10091^2 + 631^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25556609 + ... + 25556612.

Almost surely, 2^102226442 is an apocalyptic number.

102226442 is a deficient number, since it is larger than the sum of its proper divisors (51113224).

102226442 is an equidigital number, since it uses as much as digits as its factorization.

102226442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51113223.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 102226442 is about 10110.7092728453. The cubic root of 102226442 is about 467.5783726691.

Adding to 102226442 its reverse (244622201), we get a palindrome (346848643).

The spelling of 102226442 in words is "one hundred two million, two hundred twenty-six thousand, four hundred forty-two".