40215423040 has 112 divisors (see below), whose sum is σ = 109195983792. Its totient is φ = 13975289856.

The previous prime is 40215423013. The next prime is 40215423067. The reversal of 40215423040 is 4032451204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40215423013) and next prime (40215423067).

It can be written as a sum of positive squares in 8 ways, for example, as 2660083776 + 37555339264 = 51576^2 + 193792^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40215422996 and 40215423014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213609 + ... + 355048.

It is an arithmetic number, because the mean of its divisors is an integer number (974964141).

Almost surely, 2^40215423040 is an apocalyptic number.

40215423040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40215423040 is an abundant number, since it is smaller than the sum of its proper divisors (68980560752).

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

40215423040 is a wasteful number, since it uses less digits than its factorization.

40215423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568704 (or 568694 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 40215423040 its reverse (4032451204), we get a palindrome (44247874244).

The spelling of 40215423040 in words is "forty billion, two hundred fifteen million, four hundred twenty-three thousand, forty".