40342215 has 16 divisors (see below), whose sum is σ = 65922048. Its totient is φ = 21057696.

The previous prime is 40342193. The next prime is 40342223. The reversal of 40342215 is 51224304.

It is not a de Polignac number, because 40342215 - 2⁶ = 40342151 is a prime.

It is a super-2 number, since 2×40342215² = 3254988622212450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40342191 and 40342200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27907 + ... + 29316.

It is an arithmetic number, because the mean of its divisors is an integer number (4120128).

Almost surely, 2^40342215 is an apocalyptic number.

40342215 is a deficient number, since it is larger than the sum of its proper divisors (25579833).

40342215 is a wasteful number, since it uses less digits than its factorization.

40342215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57278.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40342215 is about 6351.5521725008. The cubic root of 40342215 is about 342.9677201615.

Adding to 40342215 its reverse (51224304), we get a palindrome (91566519).

The spelling of 40342215 in words is "forty million, three hundred forty-two thousand, two hundred fifteen".