140420216 has 16 divisors (see below), whose sum is σ = 263714640. Its totient is φ = 70096320.

The previous prime is 140420191. The next prime is 140420219. The reversal of 140420216 is 612024041.

It is a super-2 number, since 2×140420216² = 39435674122973312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140420219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8861 + ... + 18956.

It is an arithmetic number, because the mean of its divisors is an integer number (16482165).

Almost surely, 2^140420216 is an apocalyptic number.

It is an amenable number.

140420216 is a deficient number, since it is larger than the sum of its proper divisors (123294424).

140420216 is a wasteful number, since it uses less digits than its factorization.

140420216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28454 (or 28450 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 140420216 is about 11849.9036283001. The cubic root of 140420216 is about 519.7684077192.

Adding to 140420216 its reverse (612024041), we get a palindrome (752444257).

The spelling of 140420216 in words is "one hundred forty million, four hundred twenty thousand, two hundred sixteen".