542146891 has 16 divisors (see below), whose sum is σ = 643251168. Its totient is φ = 450432000.

The previous prime is 542146867. The next prime is 542146907. The reversal of 542146891 is 198641245.

It is a cyclic number.

It is not a de Polignac number, because 542146891 - 2¹³ = 542138699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542146861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4326 + ... + 33211.

It is an arithmetic number, because the mean of its divisors is an integer number (40203198).

Almost surely, 2^542146891 is an apocalyptic number.

542146891 is a deficient number, since it is larger than the sum of its proper divisors (101104277).

542146891 is a wasteful number, since it uses less digits than its factorization.

542146891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37662.

The product of its digits is 69120, while the sum is 40.

The square root of 542146891 is about 23284.0479942814. The cubic root of 542146891 is about 815.4030355048.

The spelling of 542146891 in words is "five hundred forty-two million, one hundred forty-six thousand, eight hundred ninety-one".