345120254 has 4 divisors (see below), whose sum is σ = 517680384. Its totient is φ = 172560126.

The previous prime is 345120253. The next prime is 345120257. The reversal of 345120254 is 452021543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345120253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86280062 + ... + 86280065.

It is an arithmetic number, because the mean of its divisors is an integer number (129420096).

Almost surely, 2^345120254 is an apocalyptic number.

345120254 is a deficient number, since it is larger than the sum of its proper divisors (172560130).

345120254 is a wasteful number, since it uses less digits than its factorization.

345120254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172560129.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 345120254 is about 18577.4124678331. The cubic root of 345120254 is about 701.4393878634.

Adding to 345120254 its reverse (452021543), we get a palindrome (797141797).

The spelling of 345120254 in words is "three hundred forty-five million, one hundred twenty thousand, two hundred fifty-four".