151121239 has 2 divisors, whose sum is σ = 151121240. Its totient is φ = 151121238.

The previous prime is 151121227. The next prime is 151121251. The reversal of 151121239 is 932121151.

151121239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (151121227) and next prime (151121251).

It is a cyclic number.

It is not a de Polignac number, because 151121239 - 2¹⁹ = 150596951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151121539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75560619 + 75560620.

It is an arithmetic number, because the mean of its divisors is an integer number (75560620).

Almost surely, 2^151121239 is an apocalyptic number.

151121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

151121239 is an equidigital number, since it uses as much as digits as its factorization.

151121239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 25.

The square root of 151121239 is about 12293.1378825750. The cubic root of 151121239 is about 532.6498820597.

The spelling of 151121239 in words is "one hundred fifty-one million, one hundred twenty-one thousand, two hundred thirty-nine".