140042820 has 24 divisors (see below), whose sum is σ = 392120064. Its totient is φ = 37344736.

The previous prime is 140042803. The next prime is 140042843. The reversal of 140042820 is 28240041.

140042820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140042820² = 39223982867104800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166964 + ... + 1167083.

It is an arithmetic number, because the mean of its divisors is an integer number (16338336).

Almost surely, 2^140042820 is an apocalyptic number.

140042820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140042820 is an abundant number, since it is smaller than the sum of its proper divisors (252077244).

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

140042820 is a wasteful number, since it uses less digits than its factorization.

140042820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334059 (or 2334057 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 140042820 is about 11833.9689031195. The cubic root of 140042820 is about 519.3023435025.

Adding to 140042820 its reverse (28240041), we get a palindrome (168282861).

The spelling of 140042820 in words is "one hundred forty million, forty-two thousand, eight hundred twenty".