140211918 has 64 divisors (see below), whose sum is σ = 388477440. Its totient is φ = 36417600.

The previous prime is 140211913. The next prime is 140211947. The reversal of 140211918 is 819112041.

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

It is a junction number, because it is equal to n+sod(n) for n = 140211891 and 140211900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140211913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12703 + ... + 21018.

It is an arithmetic number, because the mean of its divisors is an integer number (6069960).

Almost surely, 2^140211918 is an apocalyptic number.

140211918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140211918 is an abundant number, since it is smaller than the sum of its proper divisors (248265522).

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

140211918 is a wasteful number, since it uses less digits than its factorization.

140211918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33750 (or 33744 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 140211918 is about 11841.1113498691. Note that the first 3 decimals coincide. The cubic root of 140211918 is about 519.5112740458.

Adding to 140211918 its reverse (819112041), we get a palindrome (959323959).

The spelling of 140211918 in words is "one hundred forty million, two hundred eleven thousand, nine hundred eighteen".