215040542 has 8 divisors (see below), whose sum is σ = 323085456. Its totient is φ = 107345392.

The previous prime is 215040533. The next prime is 215040569. The reversal of 215040542 is 245040512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85898 + ... + 88365.

It is an arithmetic number, because the mean of its divisors is an integer number (40385682).

Almost surely, 2^215040542 is an apocalyptic number.

215040542 is a deficient number, since it is larger than the sum of its proper divisors (108044914).

215040542 is a wasteful number, since it uses less digits than its factorization.

215040542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174882.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 215040542 is about 14664.2607041746. The cubic root of 215040542 is about 599.1102943214.

The spelling of 215040542 in words is "two hundred fifteen million, forty thousand, five hundred forty-two".