142699172 has 72 divisors (see below), whose sum is σ = 320106528. Its totient is φ = 55495440.

The previous prime is 142699157. The next prime is 142699189. The reversal of 142699172 is 271996241.

Its product of digits (54432) is a multiple of the sum of its prime divisors (567).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260603 + ... + 261149.

It is an arithmetic number, because the mean of its divisors is an integer number (4445924).

Almost surely, 2^142699172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142699172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160053264).

142699172 is an abundant number, since it is smaller than the sum of its proper divisors (177407356).

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

142699172 is a wasteful number, since it uses less digits than its factorization.

142699172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 567 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 142699172 is about 11945.6758703725. The cubic root of 142699172 is about 522.5651996200.

The spelling of 142699172 in words is "one hundred forty-two million, six hundred ninety-nine thousand, one hundred seventy-two".