140041918 has 4 divisors (see below), whose sum is σ = 210062880. Its totient is φ = 70020958.

The previous prime is 140041897. The next prime is 140041931. The reversal of 140041918 is 819140041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 819140041 = 571 ⋅1434571.

It is a super-2 number, since 2×140041918² = 39223477594237448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35010478 + ... + 35010481.

It is an arithmetic number, because the mean of its divisors is an integer number (52515720).

Almost surely, 2^140041918 is an apocalyptic number.

140041918 is a deficient number, since it is larger than the sum of its proper divisors (70020962).

140041918 is an equidigital number, since it uses as much as digits as its factorization.

140041918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70020961.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 140041918 is about 11833.9307924290. The cubic root of 140041918 is about 519.3012285775.

Adding to 140041918 its reverse (819140041), we get a palindrome (959181959).

The spelling of 140041918 in words is "one hundred forty million, forty-one thousand, nine hundred eighteen".