54140042 has 16 divisors (see below), whose sum is σ = 91648800. Its totient is φ = 23760240.

The previous prime is 54140041. The next prime is 54140057. The reversal of 54140042 is 24004145.

It is a super-2 number, since 2×54140042² = 5862288295523528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54139996 and 54140023.

It is not an unprimeable number, because it can be changed into a prime (54140041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41792 + ... + 43067.

It is an arithmetic number, because the mean of its divisors is an integer number (5728050).

Almost surely, 2^54140042 is an apocalyptic number.

54140042 is a deficient number, since it is larger than the sum of its proper divisors (37508758).

54140042 is a wasteful number, since it uses less digits than its factorization.

54140042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84901.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 54140042 is about 7357.9917096991. The cubic root of 54140042 is about 378.3027771105.

Adding to 54140042 its reverse (24004145), we get a palindrome (78144187).

The spelling of 54140042 in words is "fifty-four million, one hundred forty thousand, forty-two".