It is a happy number.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
Almost surely, 24215542 is an apocalyptic number.
4215542 is a wasteful number, since it uses less digits than its factorization.
4215542 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2107773.
The square root of 4215542 is about 2053.1785114792. The cubic root of 4215542 is about 161.5416347653.
The spelling of 4215542 in words is "four million, two hundred fifteen thousand, five hundred forty-two".