2152105706542 has 32 divisors (see below), whose sum is σ = 3729036981600. Its totient is φ = 920623994880.

The previous prime is 2152105706519. The next prime is 2152105706629. The reversal of 2152105706542 is 2456075012512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2152105706495 and 2152105706504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5502084 + ... + 5880232.

It is an arithmetic number, because the mean of its divisors is an integer number (116532405675).

Almost surely, 2^{2152105706542} is an apocalyptic number.

2152105706542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2152105706542 is a deficient number, since it is larger than the sum of its proper divisors (1576931275058).

2152105706542 is a wasteful number, since it uses less digits than its factorization.

2152105706542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393396.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 2152105706542 in words is "two trillion, one hundred fifty-two billion, one hundred five million, seven hundred six thousand, five hundred forty-two".