140362821 has 16 divisors (see below), whose sum is σ = 212371200. Its totient is φ = 91583424.

The previous prime is 140362819. The next prime is 140362843. The reversal of 140362821 is 128263041.

140362821 is a `hidden beast` number, since 14 + 0 + 3 + 628 + 21 = 666.

It is not a de Polignac number, because 140362821 - 2¹ = 140362819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140362801) 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, 54036 + ... + 56573.

It is an arithmetic number, because the mean of its divisors is an integer number (13273200).

Almost surely, 2^140362821 is an apocalyptic number.

It is an amenable number.

140362821 is a deficient number, since it is larger than the sum of its proper divisors (72008379).

140362821 is a wasteful number, since it uses less digits than its factorization.

140362821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110665 (or 110659 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140362821 is about 11847.4816311316. The cubic root of 140362821 is about 519.6975817987.

The spelling of 140362821 in words is "one hundred forty million, three hundred sixty-two thousand, eight hundred twenty-one".