40012340 has 24 divisors (see below), whose sum is σ = 85405992. Its totient is φ = 15742080.

The previous prime is 40012321. The next prime is 40012361. The reversal of 40012340 is 4321004.

It can be written as a sum of positive squares in 4 ways, for example, as 5484964 + 34527376 = 2342^2 + 5876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15179 + ... + 17618.

It is an arithmetic number, because the mean of its divisors is an integer number (3558583).

Almost surely, 2^40012340 is an apocalyptic number.

It is an amenable number.

40012340 is an abundant number, since it is smaller than the sum of its proper divisors (45393652).

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

40012340 is a wasteful number, since it uses less digits than its factorization.

40012340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32867 (or 32865 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40012340 is about 6325.5308077663. The cubic root of 40012340 is about 342.0303542248.

Adding to 40012340 its reverse (4321004), we get a palindrome (44333344).

The spelling of 40012340 in words is "forty million, twelve thousand, three hundred forty".