102140406 has 16 divisors (see below), whose sum is σ = 226978800. Its totient is φ = 34046784.

The previous prime is 102140393. The next prime is 102140429. The reversal of 102140406 is 604041201.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 945691 + ... + 945798.

It is an arithmetic number, because the mean of its divisors is an integer number (14186175).

Almost surely, 2^102140406 is an apocalyptic number.

102140406 is an abundant number, since it is smaller than the sum of its proper divisors (124838394).

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

102140406 is a wasteful number, since it uses less digits than its factorization.

102140406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891500 (or 1891494 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102140406 is about 10106.4536806933. The cubic root of 102140406 is about 467.4471611381.

Adding to 102140406 its reverse (604041201), we get a palindrome (706181607).

The spelling of 102140406 in words is "one hundred two million, one hundred forty thousand, four hundred six".