421003133042 has 4 divisors (see below), whose sum is σ = 631504699566. Its totient is φ = 210501566520.

The previous prime is 421003133039. The next prime is 421003133051. The reversal of 421003133042 is 240331300124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 327606272161 + 93396860881 = 572369^2 + 305609^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421003132999 and 421003133017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105250783259 + ... + 105250783262.

Almost surely, 2^421003133042 is an apocalyptic number.

421003133042 is a deficient number, since it is larger than the sum of its proper divisors (210501566524).

421003133042 is a wasteful number, since it uses less digits than its factorization.

421003133042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210501566523.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 421003133042 its reverse (240331300124), we get a palindrome (661334433166).

The spelling of 421003133042 in words is "four hundred twenty-one billion, three million, one hundred thirty-three thousand, forty-two".