542151421 has 16 divisors (see below), whose sum is σ = 629856000. Its totient is φ = 457066368.

The previous prime is 542151409. The next prime is 542151481. The reversal of 542151421 is 124151245.

It is a cyclic number.

It is not a de Polignac number, because 542151421 - 2⁷ = 542151293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542151481) 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 in 15 ways as a sum of consecutive naturals, for example, 121791 + ... + 126163.

It is an arithmetic number, because the mean of its divisors is an integer number (39366000).

Almost surely, 2^542151421 is an apocalyptic number.

It is an amenable number.

542151421 is a deficient number, since it is larger than the sum of its proper divisors (87704579).

542151421 is a wasteful number, since it uses less digits than its factorization.

542151421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668.

The product of its digits is 1600, while the sum is 25.

The square root of 542151421 is about 23284.1452709778. The cubic root of 542151421 is about 815.4053065778.

The spelling of 542151421 in words is "five hundred forty-two million, one hundred fifty-one thousand, four hundred twenty-one".