140421916 has 12 divisors (see below), whose sum is σ = 248172120. Its totient is φ = 69515600.

The previous prime is 140421901. The next prime is 140421929. The reversal of 140421916 is 619124041.

140421916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140421916² = 39436628986222112, which contains 22 as substring.

It is a congruent number.

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, 173386 + ... + 174193.

It is an arithmetic number, because the mean of its divisors is an integer number (20681010).

Almost surely, 2^140421916 is an apocalyptic number.

It is an amenable number.

140421916 is a deficient number, since it is larger than the sum of its proper divisors (107750204).

140421916 is a wasteful number, since it uses less digits than its factorization.

140421916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347684 (or 347682 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 140421916 is about 11849.9753586242. The cubic root of 140421916 is about 519.7705052395.

Adding to 140421916 its reverse (619124041), we get a palindrome (759545957).

The spelling of 140421916 in words is "one hundred forty million, four hundred twenty-one thousand, nine hundred sixteen".