2215031242 has 4 divisors (see below), whose sum is σ = 3322546866. Its totient is φ = 1107515620.

The previous prime is 2215031227. The next prime is 2215031249. The reversal of 2215031242 is 2421305122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2421305122 = 2 ⋅1210652561.

It can be written as a sum of positive squares in only one way, i.e., 1689292201 + 525739041 = 41101^2 + 22929^2 .

It is not an unprimeable number, because it can be changed into a prime (2215031249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553757809 + ... + 553757812.

Almost surely, 2^2215031242 is an apocalyptic number.

2215031242 is a deficient number, since it is larger than the sum of its proper divisors (1107515624).

2215031242 is a wasteful number, since it uses less digits than its factorization.

2215031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107515623.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2215031242 is about 47064.1184130756. The cubic root of 2215031242 is about 1303.5467725759.

Adding to 2215031242 its reverse (2421305122), we get a palindrome (4636336364).

The spelling of 2215031242 in words is "two billion, two hundred fifteen million, thirty-one thousand, two hundred forty-two".