420040604400 has 120 divisors (see below), whose sum is σ = 1353587781504. Its totient is φ = 111340051200.

The previous prime is 420040604377. The next prime is 420040604411. The reversal of 420040604400 is 4406040024.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 847606 + ... + 1248405.

Almost surely, 2^420040604400 is an apocalyptic number.

420040604400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420040604400 is an abundant number, since it is smaller than the sum of its proper divisors (933547177104).

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

420040604400 is a wasteful number, since it uses less digits than its factorization.

420040604400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096199 (or 2096188 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 420040604400 its reverse (4406040024), we get a palindrome (424446644424).

The spelling of 420040604400 in words is "four hundred twenty billion, forty million, six hundred four thousand, four hundred".