542436449 has 2 divisors, whose sum is σ = 542436450. Its totient is φ = 542436448.

The previous prime is 542436421. The next prime is 542436469. The reversal of 542436449 is 944634245.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511076449 + 31360000 = 22607^2 + 5600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542436449 is a prime.

It is not a weakly prime, because it can be changed into another prime (542436469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271218224 + 271218225.

It is an arithmetic number, because the mean of its divisors is an integer number (271218225).

Almost surely, 2^542436449 is an apocalyptic number.

It is an amenable number.

542436449 is a deficient number, since it is larger than the sum of its proper divisors (1).

542436449 is an equidigital number, since it uses as much as digits as its factorization.

542436449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 41.

The square root of 542436449 is about 23290.2651122738. The cubic root of 542436449 is about 815.5481772577.

The spelling of 542436449 in words is "five hundred forty-two million, four hundred thirty-six thousand, four hundred forty-nine".