140405354 has 4 divisors (see below), whose sum is σ = 210608034. Its totient is φ = 70202676.

The previous prime is 140405351. The next prime is 140405359. The reversal of 140405354 is 453504041.

140405354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98505625 + 41899729 = 9925^2 + 6473^2 .

It is not an unprimeable number, because it can be changed into a prime (140405351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35101337 + ... + 35101340.

Almost surely, 2^140405354 is an apocalyptic number.

140405354 is a deficient number, since it is larger than the sum of its proper divisors (70202680).

140405354 is an equidigital number, since it uses as much as digits as its factorization.

140405354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70202679.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 140405354 is about 11849.2765179989. The cubic root of 140405354 is about 519.7500697362.

Adding to 140405354 its reverse (453504041), we get a palindrome (593909395).

The spelling of 140405354 in words is "one hundred forty million, four hundred five thousand, three hundred fifty-four".