421874836502 has 16 divisors (see below), whose sum is σ = 724796541600. Its totient is φ = 180407867328.

The previous prime is 421874836489. The next prime is 421874836507. The reversal of 421874836502 is 205638478124.

It is a super-4 number, since 4×421874836502⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421874836507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32962877 + ... + 32975672.

It is an arithmetic number, because the mean of its divisors is an integer number (45299783850).

Almost surely, 2^421874836502 is an apocalyptic number.

421874836502 is a deficient number, since it is larger than the sum of its proper divisors (302921705098).

421874836502 is a wasteful number, since it uses less digits than its factorization.

421874836502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65939015.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 421874836502 in words is "four hundred twenty-one billion, eight hundred seventy-four million, eight hundred thirty-six thousand, five hundred two".