420234236040 has 32 divisors (see below), whose sum is σ = 1260702708480. Its totient is φ = 112062462912.

The previous prime is 420234235969. The next prime is 420234236053. The reversal of 420234236040 is 40632432024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 420234235989 and 420234236007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750975864 + ... + 1750976103.

It is an arithmetic number, because the mean of its divisors is an integer number (39396959640).

Almost surely, 2^420234236040 is an apocalyptic number.

420234236040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420234236040 is an abundant number, since it is smaller than the sum of its proper divisors (840468472440).

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

420234236040 is a wasteful number, since it uses less digits than its factorization.

420234236040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501951981 (or 3501951977 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 420234236040 its reverse (40632432024), we get a palindrome (460866668064).

The spelling of 420234236040 in words is "four hundred twenty billion, two hundred thirty-four million, two hundred thirty-six thousand, forty".