It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124127204853 = 3 ⋅41375734951.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 358402721421.
It is a congruent number.
Almost surely, 2358402721421 is an apocalyptic number.
It is an amenable number.
358402721421 is a wasteful number, since it uses less digits than its factorization.
358402721421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 119467573810.
The spelling of 358402721421 in words is "three hundred fifty-eight billion, four hundred two million, seven hundred twenty-one thousand, four hundred twenty-one".