54420140 has 12 divisors (see below), whose sum is σ = 114282336. Its totient is φ = 21768048.

The previous prime is 54420137. The next prime is 54420167. The reversal of 54420140 is 4102445.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 2721007 = 54420140 / (5 + 4 + 4 + 2 + 0 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360484 + ... + 1360523.

It is an arithmetic number, because the mean of its divisors is an integer number (9523528).

Almost surely, 2^54420140 is an apocalyptic number.

It is an amenable number.

54420140 is an abundant number, since it is smaller than the sum of its proper divisors (59862196).

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

54420140 is a wasteful number, since it uses less digits than its factorization.

54420140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721016 (or 2721014 counting only the distinct ones).

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

The square root of 54420140 is about 7377.0007455605. Note that the first 3 decimals coincide. The cubic root of 54420140 is about 378.9540488656.

Adding to 54420140 its reverse (4102445), we get a palindrome (58522585).

The spelling of 54420140 in words is "fifty-four million, four hundred twenty thousand, one hundred forty".