340423240420 has 12 divisors (see below), whose sum is σ = 714888804924. Its totient is φ = 136169296160.

The previous prime is 340423240387. The next prime is 340423240457. The reversal of 340423240420 is 24042324043.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 271891330624 + 68531909796 = 521432^2 + 261786^2 .

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, 8510580991 + ... + 8510581030.

It is an arithmetic number, because the mean of its divisors is an integer number (59574067077).

Almost surely, 2^340423240420 is an apocalyptic number.

It is an amenable number.

340423240420 is an abundant number, since it is smaller than the sum of its proper divisors (374465564504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340423240420 is a wasteful number, since it uses less digits than its factorization.

340423240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17021162030 (or 17021162028 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 340423240420 its reverse (24042324043), we get a palindrome (364465564463).

The spelling of 340423240420 in words is "three hundred forty billion, four hundred twenty-three million, two hundred forty thousand, four hundred twenty".