542040 has 32 divisors (see below), whose sum is σ = 1626480. Its totient is φ = 144512.

The previous prime is 542027. The next prime is 542053. The reversal of 542040 is 40245.

It is an interprime number because it is at equal distance from previous prime (542027) and next prime (542053).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

542040 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139 + ... + 2378.

2⁵⁴²⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

542040 is an abundant number, since it is smaller than the sum of its proper divisors (1084440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542040 is a wasteful number, since it uses less digits than its factorization.

542040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531 (or 4527 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 542040 is about 736.2336585623. The cubic root of 542040 is about 81.5349443034.

Adding to 542040 its reverse (40245), we get a palindrome (582285).

It can be divided in two parts, 5420 and 40, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 542040 in words is "five hundred forty-two thousand, forty".