354142240345 has 4 divisors (see below), whose sum is σ = 424970688420. Its totient is φ = 283313792272.

The previous prime is 354142240321. The next prime is 354142240349. The reversal of 354142240345 is 543042241453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543042241453 = 25169 ⋅21575837.

It can be written as a sum of positive squares in 2 ways, for example, as 86348410201 + 267793830144 = 293851^2 + 517488^2 .

It is a cyclic number.

It is not a de Polignac number, because 354142240345 - 2²³ = 354133851737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (354142240349) 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, 35414224030 + ... + 35414224039.

It is an arithmetic number, because the mean of its divisors is an integer number (106242672105).

Almost surely, 2^354142240345 is an apocalyptic number.

It is an amenable number.

354142240345 is a deficient number, since it is larger than the sum of its proper divisors (70828448075).

354142240345 is an equidigital number, since it uses as much as digits as its factorization.

354142240345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70828448074.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 354142240345 its reverse (543042241453), we get a palindrome (897184481798).

The spelling of 354142240345 in words is "three hundred fifty-four billion, one hundred forty-two million, two hundred forty thousand, three hundred forty-five".