40561012 has 6 divisors (see below), whose sum is σ = 70981778. Its totient is φ = 20280504.

The previous prime is 40561007. The next prime is 40561033. The reversal of 40561012 is 21016504.

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 60516 = 6364^2 + 246^2 .

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, 5070123 + ... + 5070130.

Almost surely, 2^40561012 is an apocalyptic number.

It is an amenable number.

40561012 is a deficient number, since it is larger than the sum of its proper divisors (30420766).

40561012 is a wasteful number, since it uses less digits than its factorization.

40561012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140257 (or 10140255 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 40561012 is about 6368.7527821387. The cubic root of 40561012 is about 343.5866339103.

Adding to 40561012 its reverse (21016504), we get a palindrome (61577516).

The spelling of 40561012 in words is "forty million, five hundred sixty-one thousand, twelve".