140121210 has 16 divisors (see below), whose sum is σ = 336290976. Its totient is φ = 37365648.

The previous prime is 140121203. The next prime is 140121211. The reversal of 140121210 is 12121041.

It is a happy number.

140121210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (140121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335324 + ... + 2335383.

It is an arithmetic number, because the mean of its divisors is an integer number (21018186).

Almost surely, 2^140121210 is an apocalyptic number.

140121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140121210 is an abundant number, since it is smaller than the sum of its proper divisors (196169766).

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

140121210 is a wasteful number, since it uses less digits than its factorization.

140121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670717.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 140121210 is about 11837.2805153887. The cubic root of 140121210 is about 519.3992198662.

Adding to 140121210 its reverse (12121041), we get a palindrome (152242251).

The spelling of 140121210 in words is "one hundred forty million, one hundred twenty-one thousand, two hundred ten".