421345340 has 48 divisors (see below), whose sum is σ = 1008951552. Its totient is φ = 146420736.

The previous prime is 421345339. The next prime is 421345367. The reversal of 421345340 is 43543124.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43244 + ... + 52083.

It is an arithmetic number, because the mean of its divisors is an integer number (21019824).

Almost surely, 2^421345340 is an apocalyptic number.

It is an amenable number.

421345340 is an abundant number, since it is smaller than the sum of its proper divisors (587606212).

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

421345340 is a wasteful number, since it uses less digits than its factorization.

421345340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95366 (or 95364 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 421345340 is about 20526.6982245075. The cubic root of 421345340 is about 749.6859959610.

Adding to 421345340 its reverse (43543124), we get a palindrome (464888464).

It can be divided in two parts, 42134 and 5340, that added together give a palindrome (47474).

The spelling of 421345340 in words is "four hundred twenty-one million, three hundred forty-five thousand, three hundred forty".