542149 has 2 divisors, whose sum is σ = 542150. Its totient is φ = 542148.

The previous prime is 542141. The next prime is 542153. The reversal of 542149 is 941245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 66049 = 690^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 542149 - 2³ = 542141 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271074 + 271075.

It is an arithmetic number, because the mean of its divisors is an integer number (271075).

2⁵⁴²¹⁴⁹ is an apocalyptic number.

It is an amenable number.

542149 is a deficient number, since it is larger than the sum of its proper divisors (1).

542149 is an equidigital number, since it uses as much as digits as its factorization.

542149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 542149 is about 736.3076802533. The cubic root of 542149 is about 81.5404092834.

The spelling of 542149 in words is "five hundred forty-two thousand, one hundred forty-nine".