642414299 has 2 divisors, whose sum is σ = 642414300. Its totient is φ = 642414298.

The previous prime is 642414287. The next prime is 642414307. The reversal of 642414299 is 992414246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 642414299 - 2¹² = 642410203 is a prime.

It is a super-2 number, since 2×642414299² = 825392263119322802, which contains 22 as substring.

It is equal to p_33419597 and since 642414299 and 33419597 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (642414229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321207149 + 321207150.

It is an arithmetic number, because the mean of its divisors is an integer number (321207150).

Almost surely, 2^642414299 is an apocalyptic number.

642414299 is a deficient number, since it is larger than the sum of its proper divisors (1).

642414299 is an equidigital number, since it uses as much as digits as its factorization.

642414299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 642414299 is about 25345.8931387316. The cubic root of 642414299 is about 862.8561515631.

The spelling of 642414299 in words is "six hundred forty-two million, four hundred fourteen thousand, two hundred ninety-nine".