15122143 has 2 divisors, whose sum is σ = 15122144. Its totient is φ = 15122142.

The previous prime is 15122131. The next prime is 15122161. The reversal of 15122143 is 34122151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15122143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15122143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15126143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561071 + 7561072.

It is an arithmetic number, because the mean of its divisors is an integer number (7561072).

Almost surely, 2^15122143 is an apocalyptic number.

15122143 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122143 is an equidigital number, since it uses as much as digits as its factorization.

15122143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 15122143 is about 3888.7199693472. The cubic root of 15122143 is about 247.2887998631.

Adding to 15122143 its reverse (34122151), we get a palindrome (49244294).

It can be divided in two parts, 1512 and 2143, that added together give a triangular number (3655 = T₈₅).

The spelling of 15122143 in words is "fifteen million, one hundred twenty-two thousand, one hundred forty-three".