356129945 has 4 divisors (see below), whose sum is σ = 427355940. Its totient is φ = 284903952.

The previous prime is 356129911. The next prime is 356129981. The reversal of 356129945 is 549921653.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549921653 = 22079 ⋅24907.

It can be written as a sum of positive squares in 2 ways, for example, as 250019344 + 106110601 = 15812^2 + 10301^2 .

It is a cyclic number.

It is not a de Polignac number, because 356129945 - 2⁶ = 356129881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 356129896 and 356129905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35612990 + ... + 35612999.

It is an arithmetic number, because the mean of its divisors is an integer number (106838985).

Almost surely, 2^356129945 is an apocalyptic number.

It is an amenable number.

356129945 is a deficient number, since it is larger than the sum of its proper divisors (71225995).

356129945 is an equidigital number, since it uses as much as digits as its factorization.

356129945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71225994.

The product of its digits is 291600, while the sum is 44.

The square root of 356129945 is about 18871.4054855488. The cubic root of 356129945 is about 708.8203282945.

The spelling of 356129945 in words is "three hundred fifty-six million, one hundred twenty-nine thousand, nine hundred forty-five".