142089486 has 64 divisors (see below), whose sum is σ = 372971520. Its totient is φ = 34961760.

The previous prime is 142089439. The next prime is 142089511. The reversal of 142089486 is 684980241.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685 + ... + 16871.

It is an arithmetic number, because the mean of its divisors is an integer number (5827680).

Almost surely, 2^142089486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142089486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186485760).

142089486 is an abundant number, since it is smaller than the sum of its proper divisors (230882034).

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

142089486 is a wasteful number, since it uses less digits than its factorization.

142089486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16229.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 142089486 is about 11920.1294456059. The cubic root of 142089486 is about 521.8199126287.

The spelling of 142089486 in words is "one hundred forty-two million, eighty-nine thousand, four hundred eighty-six".