2420420020400 has 60 divisors (see below), whose sum is σ = 5815784704944. Its totient is φ = 968047200000.

The previous prime is 2420420020399. The next prime is 2420420020409. The reversal of 2420420020400 is 40200240242.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2420420020409) 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, 2866925 + ... + 3613875.

Almost surely, 2^{2420420020400} is an apocalyptic number.

2420420020400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2420420020400 is an abundant number, since it is smaller than the sum of its proper divisors (3395364684544).

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

2420420020400 is a wasteful number, since it uses less digits than its factorization.

2420420020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755070 (or 755059 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 2420420020400 its reverse (40200240242), we get a palindrome (2460620260642).

The spelling of 2420420020400 in words is "two trillion, four hundred twenty billion, four hundred twenty million, twenty thousand, four hundred".