542451405 has 16 divisors (see below), whose sum is σ = 869385600. Its totient is φ = 288819648.

The previous prime is 542451401. The next prime is 542451433. The reversal of 542451405 is 504154245.

It is not a de Polignac number, because 542451405 - 2² = 542451401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542451401) 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, 21202 + ... + 39171.

It is an arithmetic number, because the mean of its divisors is an integer number (54336600).

Almost surely, 2^542451405 is an apocalyptic number.

It is an amenable number.

542451405 is a deficient number, since it is larger than the sum of its proper divisors (326934195).

542451405 is a wasteful number, since it uses less digits than its factorization.

542451405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60980.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 542451405 is about 23290.5861884153. The cubic root of 542451405 is about 815.5556725913. Note that the first 3 decimals are identical.

The spelling of 542451405 in words is "five hundred forty-two million, four hundred fifty-one thousand, four hundred five".