340220121403242 has 16 divisors (see below), whose sum is σ = 716252887164960. Its totient is φ = 107437933074672.

The previous prime is 340220121403159. The next prime is 340220121403247. The reversal of 340220121403242 is 242304121022043.

It is a super-2 number, since 2×340220121403242² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (340220121403247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492193514813 + ... + 1492193515040.

It is an arithmetic number, because the mean of its divisors is an integer number (44765805447810).

Almost surely, 2^{340220121403242} is an apocalyptic number.

340220121403242 is an abundant number, since it is smaller than the sum of its proper divisors (376032765761718).

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

340220121403242 is a wasteful number, since it uses less digits than its factorization.

340220121403242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984387029877.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 340220121403242 its reverse (242304121022043), we get a palindrome (582524242425285).

The spelling of 340220121403242 in words is "three hundred forty trillion, two hundred twenty billion, one hundred twenty-one million, four hundred three thousand, two hundred forty-two".