421503151340 has 48 divisors (see below), whose sum is σ = 937631951424. Its totient is φ = 158614579200.

The previous prime is 421503151339. The next prime is 421503151387. The reversal of 421503151340 is 43151305124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517520 + ... + 1053960.

It is an arithmetic number, because the mean of its divisors is an integer number (19533998988).

Almost surely, 2^421503151340 is an apocalyptic number.

It is an amenable number.

421503151340 is an abundant number, since it is smaller than the sum of its proper divisors (516128800084).

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

421503151340 is a wasteful number, since it uses less digits than its factorization.

421503151340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538778 (or 538776 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 421503151340 its reverse (43151305124), we get a palindrome (464654456464).

The spelling of 421503151340 in words is "four hundred twenty-one billion, five hundred three million, one hundred fifty-one thousand, three hundred forty".