142858890 has 40 divisors (see below), whose sum is σ = 384133860. Its totient is φ = 38095488.

The previous prime is 142858879. The next prime is 142858921. The reversal of 142858890 is 98858241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 120362841 + 22496049 = 10971^2 + 4743^2 .

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 19 ways as a sum of consecutive naturals, for example, 87375 + ... + 88994.

Almost surely, 2^142858890 is an apocalyptic number.

142858890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142858890 is an abundant number, since it is smaller than the sum of its proper divisors (241274970).

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

142858890 is a wasteful number, since it uses less digits than its factorization.

142858890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176388 (or 176379 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 142858890 is about 11952.3591813499. The cubic root of 142858890 is about 522.7600896760.

The spelling of 142858890 in words is "one hundred forty-two million, eight hundred fifty-eight thousand, eight hundred ninety".