2154154213042 has 32 divisors (see below), whose sum is σ = 3659813176320. Its totient is φ = 943999392960.

The previous prime is 2154154213039. The next prime is 2154154213093. The reversal of 2154154213042 is 2403124514512.

It is a junction number, because it is equal to n+sod(n) for n = 2154154212989 and 2154154213007.

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, 25170942 + ... + 25256377.

It is an arithmetic number, because the mean of its divisors is an integer number (114369161760).

Almost surely, 2^{2154154213042} is an apocalyptic number.

2154154213042 is a deficient number, since it is larger than the sum of its proper divisors (1505658963278).

2154154213042 is a wasteful number, since it uses less digits than its factorization.

2154154213042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50427418.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 2154154213042 its reverse (2403124514512), we get a palindrome (4557278727554).

The spelling of 2154154213042 in words is "two trillion, one hundred fifty-four billion, one hundred fifty-four million, two hundred thirteen thousand, forty-two".