142212630 has 64 divisors (see below), whose sum is σ = 393776640. Its totient is φ = 32196864.

The previous prime is 142212601. The next prime is 142212643. The reversal of 142212630 is 36212241.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 142212597 and 142212606.

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, 19306 + ... + 25634.

It is an arithmetic number, because the mean of its divisors is an integer number (6152760).

Almost surely, 2^142212630 is an apocalyptic number.

142212630 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 142212630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196888320).

142212630 is an abundant number, since it is smaller than the sum of its proper divisors (251564010).

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

142212630 is a wasteful number, since it uses less digits than its factorization.

142212630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 142212630 is about 11925.2937070749. The cubic root of 142212630 is about 521.9706168044.

Adding to 142212630 its reverse (36212241), we get a palindrome (178424871).

The spelling of 142212630 in words is "one hundred forty-two million, two hundred twelve thousand, six hundred thirty".