215040342 has 32 divisors (see below), whose sum is σ = 469848960. Its totient is φ = 65070720.

The previous prime is 215040289. The next prime is 215040349. The reversal of 215040342 is 243040512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215040349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54798 + ... + 58590.

It is an arithmetic number, because the mean of its divisors is an integer number (14682780).

Almost surely, 2^215040342 is an apocalyptic number.

215040342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215040342 is an abundant number, since it is smaller than the sum of its proper divisors (254808618).

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

215040342 is a wasteful number, since it uses less digits than its factorization.

215040342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668.

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

The square root of 215040342 is about 14664.2538848726. The cubic root of 215040342 is about 599.1101085857.

Adding to 215040342 its reverse (243040512), we get a palindrome (458080854).

The spelling of 215040342 in words is "two hundred fifteen million, forty thousand, three hundred forty-two".