215142451124 has 12 divisors (see below), whose sum is σ = 376535784324. Its totient is φ = 107560798464.

The previous prime is 215142451063. The next prime is 215142451127. The reversal of 215142451124 is 421154241512.

It can be written as a sum of positive squares in 2 ways, for example, as 60432388900 + 154710062224 = 245830^2 + 393332^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215142451127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560259 + ... + 2642954.

It is an arithmetic number, because the mean of its divisors is an integer number (31377982027).

Almost surely, 2^215142451124 is an apocalyptic number.

It is an amenable number.

215142451124 is a deficient number, since it is larger than the sum of its proper divisors (161393333200).

215142451124 is a wasteful number, since it uses less digits than its factorization.

215142451124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213554 (or 5213552 counting only the distinct ones).

The product of its digits is 12800, while the sum is 32.

Adding to 215142451124 its reverse (421154241512), we get a palindrome (636296692636).

The spelling of 215142451124 in words is "two hundred fifteen billion, one hundred forty-two million, four hundred fifty-one thousand, one hundred twenty-four".