140740816 has 10 divisors (see below), whose sum is σ = 272685362. Its totient is φ = 70370400.

The previous prime is 140740813. The next prime is 140740819. The reversal of 140740816 is 618047041.

It is an interprime number because it is at equal distance from previous prime (140740813) and next prime (140740819).

It can be written as a sum of positive squares in only one way, i.e., 96118416 + 44622400 = 9804^2 + 6680^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140740813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4398135 + ... + 4398166.

Almost surely, 2^140740816 is an apocalyptic number.

140740816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

140740816 is a deficient number, since it is larger than the sum of its proper divisors (131944546).

140740816 is an equidigital number, since it uses as much as digits as its factorization.

140740816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796309 (or 8796303 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 140740816 is about 11863.4234519383. The cubic root of 140740816 is about 520.1636762862.

Adding to 140740816 its reverse (618047041), we get a palindrome (758787857).

The spelling of 140740816 in words is "one hundred forty million, seven hundred forty thousand, eight hundred sixteen".