542262449 has 2 divisors, whose sum is σ = 542262450. Its totient is φ = 542262448.

The previous prime is 542262437. The next prime is 542262473. The reversal of 542262449 is 944262245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504316849 + 37945600 = 22457^2 + 6160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542262449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (542262649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271131224 + 271131225.

It is an arithmetic number, because the mean of its divisors is an integer number (271131225).

Almost surely, 2^542262449 is an apocalyptic number.

It is an amenable number.

542262449 is a deficient number, since it is larger than the sum of its proper divisors (1).

542262449 is an equidigital number, since it uses as much as digits as its factorization.

542262449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 38.

The square root of 542262449 is about 23286.5293463839. The cubic root of 542262449 is about 815.4609654691.

The spelling of 542262449 in words is "five hundred forty-two million, two hundred sixty-two thousand, four hundred forty-nine".