2045423221342 has 4 divisors (see below), whose sum is σ = 3068134832016. Its totient is φ = 1022711610670.

The previous prime is 2045423221277. The next prime is 2045423221349. The reversal of 2045423221342 is 2431223245402.

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

It is a junction number, because it is equal to n+sod(n) for n = 2045423221298 and 2045423221307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045423221349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511355805334 + ... + 511355805337.

It is an arithmetic number, because the mean of its divisors is an integer number (767033708004).

Almost surely, 2^{2045423221342} is an apocalyptic number.

2045423221342 is a deficient number, since it is larger than the sum of its proper divisors (1022711610674).

2045423221342 is a wasteful number, since it uses less digits than its factorization.

2045423221342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022711610673.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 2045423221342 its reverse (2431223245402), we get a palindrome (4476646466744).

The spelling of 2045423221342 in words is "two trillion, forty-five billion, four hundred twenty-three million, two hundred twenty-one thousand, three hundred forty-two".