42122211041545 has 8 divisors (see below), whose sum is σ = 50546721166920. Its totient is φ = 33697723555200.

The previous prime is 42122211041483. The next prime is 42122211041557. The reversal of 42122211041545 is 54514011222124.

It can be written as a sum of positive squares in 4 ways, for example, as 6179440279104 + 35942770762441 = 2485848^2 + 5995229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42122211041545 - 2¹⁵ = 42122211008777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42122211041545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254756 + ... + 9263845.

It is an arithmetic number, because the mean of its divisors is an integer number (6318340145865).

Almost surely, 2^{42122211041545} is an apocalyptic number.

It is an amenable number.

42122211041545 is a deficient number, since it is larger than the sum of its proper divisors (8424510125375).

42122211041545 is a wasteful number, since it uses less digits than its factorization.

42122211041545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11319515.

The product of its (nonzero) digits is 25600, while the sum is 34.

Adding to 42122211041545 its reverse (54514011222124), we get a palindrome (96636222263669).

The spelling of 42122211041545 in words is "forty-two trillion, one hundred twenty-two billion, two hundred eleven million, forty-one thousand, five hundred forty-five".