142043520 has 128 divisors (see below), whose sum is σ = 456503040. Its totient is φ = 37566464.

The previous prime is 142043509. The next prime is 142043521. The reversal of 142043520 is 25340241.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142043521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320419 + ... + 320861.

It is an arithmetic number, because the mean of its divisors is an integer number (3566430).

Almost surely, 2^142043520 is an apocalyptic number.

142043520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142043520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228251520).

142043520 is an abundant number, since it is smaller than the sum of its proper divisors (314459520).

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

142043520 is a wasteful number, since it uses less digits than its factorization.

142043520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 142043520 is about 11918.2012065580. The cubic root of 142043520 is about 521.7636369165.

Adding to 142043520 its reverse (25340241), we get a palindrome (167383761).

It can be divided in two parts, 1420435 and 20, that added together give a triangular number (1420455 = T₁₆₈₅).

The spelling of 142043520 in words is "one hundred forty-two million, forty-three thousand, five hundred twenty".