142520022 has 24 divisors (see below), whose sum is σ = 309198240. Its totient is φ = 47444400.

The previous prime is 142520011. The next prime is 142520023. The reversal of 142520022 is 220025241.

142520022 is a `hidden beast` number, since 142 + 520 + 0 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 142519977 and 142520004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142520023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10147 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (12883260).

Almost surely, 2^142520022 is an apocalyptic number.

142520022 is an abundant number, since it is smaller than the sum of its proper divisors (166678218).

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

142520022 is a wasteful number, since it uses less digits than its factorization.

142520022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10388 (or 10385 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 142520022 is about 11938.1749861526. The cubic root of 142520022 is about 522.3464252605.

Adding to 142520022 its reverse (220025241), we get a palindrome (362545263).

The spelling of 142520022 in words is "one hundred forty-two million, five hundred twenty thousand, twenty-two".