102111432 has 16 divisors (see below), whose sum is σ = 255278640. Its totient is φ = 34037136.

The previous prime is 102111431. The next prime is 102111437. The reversal of 102111432 is 234111201.

It is not an unprimeable number, because it can be changed into a prime (102111431) 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, 2127298 + ... + 2127345.

It is an arithmetic number, because the mean of its divisors is an integer number (15954915).

Almost surely, 2^102111432 is an apocalyptic number.

102111432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111432 is an abundant number, since it is smaller than the sum of its proper divisors (153167208).

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

102111432 is a wasteful number, since it uses less digits than its factorization.

102111432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254652 (or 4254648 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 102111432 is about 10105.0201385252. The cubic root of 102111432 is about 467.4029569704.

Adding to 102111432 its reverse (234111201), we get a palindrome (336222633).

The spelling of 102111432 in words is "one hundred two million, one hundred eleven thousand, four hundred thirty-two".