10212421442 has 4 divisors (see below), whose sum is σ = 15318632166. Its totient is φ = 5106210720.

The previous prime is 10212421423. The next prime is 10212421487. The reversal of 10212421442 is 24412421201.

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., 8206366921 + 2006054521 = 90589^2 + 44789^2 .

It is a super-4 number, since 4×10212421442⁴ (a number of 41 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553105359 + ... + 2553105362.

Almost surely, 2^10212421442 is an apocalyptic number.

10212421442 is a deficient number, since it is larger than the sum of its proper divisors (5106210724).

10212421442 is an equidigital number, since it uses as much as digits as its factorization.

10212421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106210723.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 10212421442 its reverse (24412421201), we get a palindrome (34624842643).

The spelling of 10212421442 in words is "ten billion, two hundred twelve million, four hundred twenty-one thousand, four hundred forty-two".