21142414421042 has 8 divisors (see below), whose sum is σ = 32233517068332. Its totient is φ = 10397908731600.

The previous prime is 21142414421021. The next prime is 21142414421057. The reversal of 21142414421042 is 24012441424112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12629913791881 + 8512500629161 = 3553859^2 + 2917619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×21142414421042³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86649239309 + ... + 86649239552.

Almost surely, 2^{21142414421042} is an apocalyptic number.

21142414421042 is a deficient number, since it is larger than the sum of its proper divisors (11091102647290).

21142414421042 is a wasteful number, since it uses less digits than its factorization.

21142414421042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173298478924.

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 21142414421042 its reverse (24012441424112), we get a palindrome (45154855845154).

The spelling of 21142414421042 in words is "twenty-one trillion, one hundred forty-two billion, four hundred fourteen million, four hundred twenty-one thousand, forty-two".