356610421 has 4 divisors (see below), whose sum is σ = 356714892. Its totient is φ = 356505952.

The previous prime is 356610407. The next prime is 356610437. The reversal of 356610421 is 124016653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124016653 = 1741 ⋅71233.

It can be written as a sum of positive squares in 2 ways, for example, as 159516900 + 197093521 = 12630^2 + 14039^2 .

It is a cyclic number.

It is not a de Polignac number, because 356610421 - 2⁵ = 356610389 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 356610421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356610521) 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, 46936 + ... + 54001.

It is an arithmetic number, because the mean of its divisors is an integer number (89178723).

Almost surely, 2^356610421 is an apocalyptic number.

It is an amenable number.

356610421 is a deficient number, since it is larger than the sum of its proper divisors (104471).

356610421 is a wasteful number, since it uses less digits than its factorization.

356610421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104470.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 356610421 is about 18884.1314600381. The cubic root of 356610421 is about 709.1389555390.

The spelling of 356610421 in words is "three hundred fifty-six million, six hundred ten thousand, four hundred twenty-one".