140421224 has 16 divisors (see below), whose sum is σ = 278777700. Its totient is φ = 66080512.

The previous prime is 140421217. The next prime is 140421283. The reversal of 140421224 is 422124041.

It can be written as a sum of positive squares in 2 ways, for example, as 132480100 + 7941124 = 11510^2 + 2818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140421196 and 140421205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516119 + ... + 516390.

Almost surely, 2^140421224 is an apocalyptic number.

It is an amenable number.

140421224 is a deficient number, since it is larger than the sum of its proper divisors (138356476).

140421224 is a wasteful number, since it uses less digits than its factorization.

140421224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032532 (or 1032528 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 140421224 is about 11849.9461602152. The cubic root of 140421224 is about 519.7696514274.

Adding to 140421224 its reverse (422124041), we get a palindrome (562545265).

The spelling of 140421224 in words is "one hundred forty million, four hundred twenty-one thousand, two hundred twenty-four".