54021420 has 36 divisors (see below), whose sum is σ = 163865520. Its totient is φ = 14405664.

The previous prime is 54021419. The next prime is 54021421. The reversal of 54021420 is 2412045.

It is an interprime number because it is at equal distance from previous prime (54021419) and next prime (54021421).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 54021393 and 54021402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54021421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149880 + ... + 150239.

It is an arithmetic number, because the mean of its divisors is an integer number (4551820).

Almost surely, 2^54021420 is an apocalyptic number.

It is an amenable number.

54021420 is an abundant number, since it is smaller than the sum of its proper divisors (109844100).

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

54021420 is a wasteful number, since it uses less digits than its factorization.

54021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300134 (or 300129 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 54021420 is about 7349.9265302450. The cubic root of 54021420 is about 378.0262852302.

Adding to 54021420 its reverse (2412045), we get a palindrome (56433465).

The spelling of 54021420 in words is "fifty-four million, twenty-one thousand, four hundred twenty".