140641418 has 4 divisors (see below), whose sum is σ = 210962130. Its totient is φ = 70320708.

The previous prime is 140641411. The next prime is 140641429. The reversal of 140641418 is 814146041.

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., 100661089 + 39980329 = 10033^2 + 6323^2 .

It is not an unprimeable number, because it can be changed into a prime (140641411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35160353 + ... + 35160356.

Almost surely, 2^140641418 is an apocalyptic number.

140641418 is a deficient number, since it is larger than the sum of its proper divisors (70320712).

140641418 is an equidigital number, since it uses as much as digits as its factorization.

140641418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70320711.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 140641418 is about 11859.2334490894. The cubic root of 140641418 is about 520.0411924962.

Adding to 140641418 its reverse (814146041), we get a palindrome (954787459).

It can be divided in two parts, 1406 and 41418, that added together give a palindrome (42824).

The spelling of 140641418 in words is "one hundred forty million, six hundred forty-one thousand, four hundred eighteen".