2120126353642 has 48 divisors (see below), whose sum is σ = 3629870133120. Its totient is φ = 926924287520.

The previous prime is 2120126353637. The next prime is 2120126353649. The reversal of 2120126353642 is 2463536210212.

It is not an unprimeable number, because it can be changed into a prime (2120126353649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1271403 + ... + 2420065.

It is an arithmetic number, because the mean of its divisors is an integer number (75622294440).

Almost surely, 2^{2120126353642} is an apocalyptic number.

2120126353642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2120126353642 is a deficient number, since it is larger than the sum of its proper divisors (1509743779478).

2120126353642 is a wasteful number, since it uses less digits than its factorization.

2120126353642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148979 (or 1148968 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 2120126353642 in words is "two trillion, one hundred twenty billion, one hundred twenty-six million, three hundred fifty-three thousand, six hundred forty-two".