102669144 has 16 divisors (see below), whose sum is σ = 256672920. Its totient is φ = 34223040.

The previous prime is 102669143. The next prime is 102669157. The reversal of 102669144 is 441966201.

It is a super-4 number, since 4×102669144⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102669143) 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, 2138917 + ... + 2138964.

Almost surely, 2^102669144 is an apocalyptic number.

It is an amenable number.

102669144 is an abundant number, since it is smaller than the sum of its proper divisors (154003776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102669144 is a wasteful number, since it uses less digits than its factorization.

102669144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277890 (or 4277886 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 102669144 is about 10132.5783490679. The cubic root of 102669144 is about 468.2523658978.

The spelling of 102669144 in words is "one hundred two million, six hundred sixty-nine thousand, one hundred forty-four".