542210381 has 2 divisors, whose sum is σ = 542210382. Its totient is φ = 542210380.

The previous prime is 542210351. The next prime is 542210387. The reversal of 542210381 is 183012245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290702500 + 251507881 = 17050^2 + 15859^2 .

It is a cyclic number.

It is not a de Polignac number, because 542210381 - 2²² = 538016077 is a prime.

It is a super-2 number, since 2×542210381² = 587984194528330322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 542210381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542210387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271105190 + 271105191.

It is an arithmetic number, because the mean of its divisors is an integer number (271105191).

Almost surely, 2^542210381 is an apocalyptic number.

It is an amenable number.

542210381 is a deficient number, since it is larger than the sum of its proper divisors (1).

542210381 is an equidigital number, since it uses as much as digits as its factorization.

542210381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 542210381 is about 23285.4113341379. The cubic root of 542210381 is about 815.4348644666.

The spelling of 542210381 in words is "five hundred forty-two million, two hundred ten thousand, three hundred eighty-one".