142069824 has 84 divisors (see below), whose sum is σ = 438565036. Its totient is φ = 43711488.

The previous prime is 142069787. The next prime is 142069843. The reversal of 142069824 is 428960241.

It can be written as a sum of positive squares in 2 ways, for example, as 34574400 + 107495424 = 5880^2 + 10368^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999 + ... + 16974.

Almost surely, 2^142069824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142069824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219282518).

142069824 is an abundant number, since it is smaller than the sum of its proper divisors (296495212).

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

142069824 is a wasteful number, since it uses less digits than its factorization.

142069824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19004 (or 18991 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 142069824 is about 11919.3046777067. The cubic root of 142069824 is about 521.7958421252.

The spelling of 142069824 in words is "one hundred forty-two million, sixty-nine thousand, eight hundred twenty-four".