169440142 has 16 divisors (see below), whose sum is σ = 256485600. Its totient is φ = 83948832.

The previous prime is 169440121. The next prime is 169440143. The reversal of 169440142 is 241044961.

169440142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169440143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115888 + ... + 117340.

It is an arithmetic number, because the mean of its divisors is an integer number (16030350).

Almost surely, 2^169440142 is an apocalyptic number.

169440142 is a deficient number, since it is larger than the sum of its proper divisors (87045458).

169440142 is a wasteful number, since it uses less digits than its factorization.

169440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 169440142 is about 13016.9175306599. The cubic root of 169440142 is about 553.3570349197.

The spelling of 169440142 in words is "one hundred sixty-nine million, four hundred forty thousand, one hundred forty-two".