409169142 has 24 divisors (see below), whose sum is σ = 933193560. Its totient is φ = 129211200.

The previous prime is 409169129. The next prime is 409169191. The reversal of 409169142 is 241961904.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 409169097 and 409169106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597859 + ... + 598542.

It is an arithmetic number, because the mean of its divisors is an integer number (38883065).

Almost surely, 2^409169142 is an apocalyptic number.

409169142 is an abundant number, since it is smaller than the sum of its proper divisors (524024418).

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

409169142 is a wasteful number, since it uses less digits than its factorization.

409169142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196428 (or 1196425 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 409169142 is about 20227.9297507184. The cubic root of 409169142 is about 742.3937228428.

The spelling of 409169142 in words is "four hundred nine million, one hundred sixty-nine thousand, one hundred forty-two".