358402721421 has 4 divisors (see below), whose sum is σ = 477870295232. Its totient is φ = 238935147612.

The previous prime is 358402721419. The next prime is 358402721429. The reversal of 358402721421 is 124127204853.

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 not a de Polignac number, because 358402721421 - 2¹ = 358402721419 is a prime.

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.

It is not an unprimeable number, because it can be changed into a prime (358402721429) 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, 59733786901 + ... + 59733786906.

It is an arithmetic number, because the mean of its divisors is an integer number (119467573808).

Almost surely, 2^358402721421 is an apocalyptic number.

It is an amenable number.

358402721421 is a deficient number, since it is larger than the sum of its proper divisors (119467573811).

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 product of its (nonzero) digits is 107520, while the sum is 39.

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".