142569990 has 128 divisors (see below), whose sum is σ = 408240000. Its totient is φ = 35278848.

The previous prime is 142569989. The next prime is 142570027. The reversal of 142569990 is 99965241.

142569990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 408336 + ... + 408684.

It is an arithmetic number, because the mean of its divisors is an integer number (3189375).

Almost surely, 2^142569990 is an apocalyptic number.

142569990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142569990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204120000).

142569990 is an abundant number, since it is smaller than the sum of its proper divisors (265670010).

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

142569990 is a wasteful number, since it uses less digits than its factorization.

142569990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 142569990 is about 11940.2675849413. The cubic root of 142569990 is about 522.4074636000.

The spelling of 142569990 in words is "one hundred forty-two million, five hundred sixty-nine thousand, nine hundred ninety".