140740812 has 18 divisors (see below), whose sum is σ = 355761588. Its totient is φ = 46913592.

The previous prime is 140740801. The next prime is 140740813. The reversal of 140740812 is 218047041.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1954698 + ... + 1954769.

Almost surely, 2^140740812 is an apocalyptic number.

140740812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140740812 is an abundant number, since it is smaller than the sum of its proper divisors (215020776).

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

140740812 is a wasteful number, since it uses less digits than its factorization.

140740812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909477 (or 3909472 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 140740812 is about 11863.4232833529. The cubic root of 140740812 is about 520.1636713583.

Adding to 140740812 its reverse (218047041), we get a palindrome (358787853).

The spelling of 140740812 in words is "one hundred forty million, seven hundred forty thousand, eight hundred twelve".