542209537 has 2 divisors, whose sum is σ = 542209538. Its totient is φ = 542209536.

The previous prime is 542209523. The next prime is 542209621. The reversal of 542209537 is 735902245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381655296 + 160554241 = 19536^2 + 12671^2 .

It is a cyclic number.

It is not a de Polignac number, because 542209537 - 2¹¹ = 542207489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542209496 and 542209505.

It is not a weakly prime, because it can be changed into another prime (542269537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271104768 + 271104769.

It is an arithmetic number, because the mean of its divisors is an integer number (271104769).

Almost surely, 2^542209537 is an apocalyptic number.

It is an amenable number.

542209537 is a deficient number, since it is larger than the sum of its proper divisors (1).

542209537 is an equidigital number, since it uses as much as digits as its factorization.

542209537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 542209537 is about 23285.3932111957. The cubic root of 542209537 is about 815.4344413667.

The spelling of 542209537 in words is "five hundred forty-two million, two hundred nine thousand, five hundred thirty-seven".