158420387 has 2 divisors, whose sum is σ = 158420388. Its totient is φ = 158420386.

The previous prime is 158420377. The next prime is 158420393. The reversal of 158420387 is 783024851.

158420387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158420387 - 2⁸ = 158420131 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158420387.

It is not a weakly prime, because it can be changed into another prime (158420377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79210193 + 79210194.

It is an arithmetic number, because the mean of its divisors is an integer number (79210194).

Almost surely, 2^158420387 is an apocalyptic number.

158420387 is a deficient number, since it is larger than the sum of its proper divisors (1).

158420387 is an equidigital number, since it uses as much as digits as its factorization.

158420387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 158420387 is about 12586.5160787249. The cubic root of 158420387 is about 541.0910576613.

The spelling of 158420387 in words is "one hundred fifty-eight million, four hundred twenty thousand, three hundred eighty-seven".