342215987 has 2 divisors, whose sum is σ = 342215988. Its totient is φ = 342215986.

The previous prime is 342215969. The next prime is 342216029. The reversal of 342215987 is 789512243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342215987 - 2²² = 338021683 is a prime.

It is a super-2 number, since 2×342215987² = 234223563516768338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342215957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171107993 + 171107994.

It is an arithmetic number, because the mean of its divisors is an integer number (171107994).

Almost surely, 2^342215987 is an apocalyptic number.

342215987 is a deficient number, since it is larger than the sum of its proper divisors (1).

342215987 is an equidigital number, since it uses as much as digits as its factorization.

342215987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 342215987 is about 18499.0807068892. The cubic root of 342215987 is about 699.4662509436.

The spelling of 342215987 in words is "three hundred forty-two million, two hundred fifteen thousand, nine hundred eighty-seven".