542451 has 16 divisors (see below), whose sum is σ = 890624. Its totient is φ = 285984.

The previous prime is 542447. The next prime is 542461. The reversal of 542451 is 154245.

542451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 542451 - 2² = 542447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (542401) 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, 721 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (55664).

2⁵⁴²⁴⁵¹ is an apocalyptic number.

542451 is a deficient number, since it is larger than the sum of its proper divisors (348173).

542451 is a wasteful number, since it uses less digits than its factorization.

542451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its digits is 800, while the sum is 21.

The square root of 542451 is about 736.5127290142. The cubic root of 542451 is about 81.5555469624. Note that the first 4 decimals are identical.

Adding to 542451 its reverse (154245), we get a palindrome (696696).

It can be divided in two parts, 542 and 451, that multiplied together give a palindrome (244442).

The spelling of 542451 in words is "five hundred forty-two thousand, four hundred fifty-one".