40342212 has 30 divisors (see below), whose sum is σ = 105463358. Its totient is φ = 13447296.

The previous prime is 40342193. The next prime is 40342223. The reversal of 40342212 is 21224304.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 19766916 = 4536^2 + 4446^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61933 + ... + 62580.

Almost surely, 2^40342212 is an apocalyptic number.

It is an amenable number.

40342212 is an abundant number, since it is smaller than the sum of its proper divisors (65121146).

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

40342212 is a wasteful number, since it uses less digits than its factorization.

40342212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124529 (or 124518 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40342212 is about 6351.5519363381. The cubic root of 40342212 is about 342.9677116600.

Adding to 40342212 its reverse (21224304), we get a palindrome (61566516).

The spelling of 40342212 in words is "forty million, three hundred forty-two thousand, two hundred twelve".