42240021402 has 8 divisors (see below), whose sum is σ = 84480042816. Its totient is φ = 14080007132.

The previous prime is 42240021401. The next prime is 42240021449. The reversal of 42240021402 is 20412004224.

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

42240021402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42240021401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520001778 + ... + 3520001789.

It is an arithmetic number, because the mean of its divisors is an integer number (10560005352).

Almost surely, 2^42240021402 is an apocalyptic number.

42240021402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42240021402 is a wasteful number, since it uses less digits than its factorization.

42240021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040003572.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 42240021402 its reverse (20412004224), we get a palindrome (62652025626).

The spelling of 42240021402 in words is "forty-two billion, two hundred forty million, twenty-one thousand, four hundred two".