102149724 has 24 divisors (see below), whose sum is σ = 238513408. Its totient is φ = 34026480.

The previous prime is 102149717. The next prime is 102149731. The reversal of 102149724 is 427941201.

It is an interprime number because it is at equal distance from previous prime (102149717) and next prime (102149731).

It is a super-2 number, since 2×102149724² = 20869132226552352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102149691 and 102149700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30459 + ... + 33645.

Almost surely, 2^102149724 is an apocalyptic number.

It is an amenable number.

102149724 is an abundant number, since it is smaller than the sum of its proper divisors (136363684).

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

102149724 is a wasteful number, since it uses less digits than its factorization.

102149724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865 (or 5863 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 102149724 is about 10106.9146627445. The cubic root of 102149724 is about 467.4613753633.

The spelling of 102149724 in words is "one hundred two million, one hundred forty-nine thousand, seven hundred twenty-four".