102290146 has 16 divisors (see below), whose sum is σ = 178934400. Its totient is φ = 43838340.

The previous prime is 102290143. The next prime is 102290147. The reversal of 102290146 is 641092201.

It is a self number, because there is not a number n which added to its sum of digits gives 102290146.

It is not an unprimeable number, because it can be changed into a prime (102290143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73870 + ... + 75241.

It is an arithmetic number, because the mean of its divisors is an integer number (11183400).

Almost surely, 2^102290146 is an apocalyptic number.

102290146 is a deficient number, since it is larger than the sum of its proper divisors (76644254).

102290146 is an equidigital number, since it uses as much as digits as its factorization.

102290146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149134 (or 149120 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 102290146 is about 10113.8591052081. The cubic root of 102290146 is about 467.6754787501.

The spelling of 102290146 in words is "one hundred two million, two hundred ninety thousand, one hundred forty-six".