142071930 has 384 divisors, whose sum is σ = 528353280. Its totient is φ = 25505280.

The previous prime is 142071901. The next prime is 142071961. The reversal of 142071930 is 39170241.

It is a junction number, because it is equal to n+sod(n) for n = 142071894 and 142071903.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1711669 + ... + 1711751.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^142071930 is an apocalyptic number.

142071930 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 142071930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264176640).

142071930 is an abundant number, since it is smaller than the sum of its proper divisors (386281350).

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

142071930 is a wasteful number, since it uses less digits than its factorization.

142071930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 142071930 is about 11919.3930214588. The cubic root of 142071930 is about 521.7984204269.

The spelling of 142071930 in words is "one hundred forty-two million, seventy-one thousand, nine hundred thirty".