102889742 has 4 divisors (see below), whose sum is σ = 154334616. Its totient is φ = 51444870.

The previous prime is 102889727. The next prime is 102889753. The reversal of 102889742 is 247988201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247988201 = 127 ⋅1952663.

It is a self number, because there is not a number n which added to its sum of digits gives 102889742.

It is a congruent number.

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, 25722434 + ... + 25722437.

It is an arithmetic number, because the mean of its divisors is an integer number (38583654).

Almost surely, 2^102889742 is an apocalyptic number.

102889742 is a deficient number, since it is larger than the sum of its proper divisors (51444874).

102889742 is an equidigital number, since it uses as much as digits as its factorization.

102889742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51444873.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 102889742 is about 10143.4580888374. The cubic root of 102889742 is about 468.5874930135.

The spelling of 102889742 in words is "one hundred two million, eight hundred eighty-nine thousand, seven hundred forty-two".