142618820 has 12 divisors (see below), whose sum is σ = 299499564. Its totient is φ = 57047520.

The previous prime is 142618799. The next prime is 142618823. The reversal of 142618820 is 28816241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37063744 + 105555076 = 6088^2 + 10274^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (142618823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3565451 + ... + 3565490.

It is an arithmetic number, because the mean of its divisors is an integer number (24958297).

Almost surely, 2^142618820 is an apocalyptic number.

142618820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142618820 is an abundant number, since it is smaller than the sum of its proper divisors (156880744).

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

142618820 is a wasteful number, since it uses less digits than its factorization.

142618820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7130950 (or 7130948 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 142618820 is about 11942.3121714348. The cubic root of 142618820 is about 522.4670980404.

The spelling of 142618820 in words is "one hundred forty-two million, six hundred eighteen thousand, eight hundred twenty".