2012154061542 has 16 divisors (see below), whose sum is σ = 4024342459200. Its totient is φ = 670712297832.

The previous prime is 2012154061537. The next prime is 2012154061553. The reversal of 2012154061542 is 2451604512102.

It is a happy number.

It is a congruent number.

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, 634792 + ... + 2104107.

It is an arithmetic number, because the mean of its divisors is an integer number (251521403700).

Almost surely, 2^{2012154061542} is an apocalyptic number.

2012154061542 is an abundant number, since it is smaller than the sum of its proper divisors (2012188397658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012154061542 is a wasteful number, since it uses less digits than its factorization.

2012154061542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861347.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 2012154061542 its reverse (2451604512102), we get a palindrome (4463758573644).

The spelling of 2012154061542 in words is "two trillion, twelve billion, one hundred fifty-four million, sixty-one thousand, five hundred forty-two".