166102040 has 32 divisors (see below), whose sum is σ = 402479280. Its totient is φ = 61329792.

The previous prime is 166102037. The next prime is 166102049. The reversal of 166102040 is 40201661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166102049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159194 + ... + 160233.

Almost surely, 2^166102040 is an apocalyptic number.

166102040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166102040 is an abundant number, since it is smaller than the sum of its proper divisors (236377240).

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

166102040 is a wasteful number, since it uses less digits than its factorization.

166102040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319451 (or 319447 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 166102040 is about 12888.0580383547. The cubic root of 166102040 is about 549.6990529898.

The spelling of 166102040 in words is "one hundred sixty-six million, one hundred two thousand, forty".