140120346 has 16 divisors (see below), whose sum is σ = 284188608. Its totient is φ = 46048800.

The previous prime is 140120327. The next prime is 140120389. The reversal of 140120346 is 643021041.

It is a super-2 number, since 2×140120346² = 39267422726319432, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164035 + ... + 164886.

It is an arithmetic number, because the mean of its divisors is an integer number (17761788).

Almost surely, 2^140120346 is an apocalyptic number.

140120346 is an abundant number, since it is smaller than the sum of its proper divisors (144068262).

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

140120346 is a wasteful number, since it uses less digits than its factorization.

140120346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328997.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 140120346 is about 11837.2440204635. The cubic root of 140120346 is about 519.3981523099.

Adding to 140120346 its reverse (643021041), we get a palindrome (783141387).

The spelling of 140120346 in words is "one hundred forty million, one hundred twenty thousand, three hundred forty-six".