1230020142 has 64 divisors (see below), whose sum is σ = 2830282560. Its totient is φ = 353009664.

The previous prime is 1230020107. The next prime is 1230020147. The reversal of 1230020142 is 2410200321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230020147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145734 + ... + 153942.

It is an arithmetic number, because the mean of its divisors is an integer number (44223165).

Almost surely, 2^1230020142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230020142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415141280).

1230020142 is an abundant number, since it is smaller than the sum of its proper divisors (1600262418).

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

1230020142 is a wasteful number, since it uses less digits than its factorization.

1230020142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1230020142 is about 35071.6429897432. The cubic root of 1230020142 is about 1071.4471181602.

Adding to 1230020142 its reverse (2410200321), we get a palindrome (3640220463).

The spelling of 1230020142 in words is "one billion, two hundred thirty million, twenty thousand, one hundred forty-two".