351842121 has 6 divisors (see below), whose sum is σ = 508216410. Its totient is φ = 234561408.

The previous prime is 351842093. The next prime is 351842131. The reversal of 351842121 is 121248153.

It can be written as a sum of positive squares in only one way, i.e., 248535225 + 103306896 = 15765^2 + 10164^2 .

It is not a de Polignac number, because 351842121 - 2⁵ = 351842089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (351842131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19546776 + ... + 19546793.

It is an arithmetic number, because the mean of its divisors is an integer number (84702735).

Almost surely, 2^351842121 is an apocalyptic number.

It is an amenable number.

351842121 is a deficient number, since it is larger than the sum of its proper divisors (156374289).

351842121 is a wasteful number, since it uses less digits than its factorization.

351842121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39093575 (or 39093572 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 351842121 is about 18757.4550779150. The cubic root of 351842121 is about 705.9640891834.

The spelling of 351842121 in words is "three hundred fifty-one million, eight hundred forty-two thousand, one hundred twenty-one".