542115161261 has 16 divisors (see below), whose sum is σ = 581192091648. Its totient is φ = 503842636800.

The previous prime is 542115161197. The next prime is 542115161267. The reversal of 542115161261 is 162161511245.

It is a cyclic number.

It is not a de Polignac number, because 542115161261 - 2⁶ = 542115161197 is a prime.

It is a super-2 number, since 2×542115161261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542115161267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2960276 + ... + 3138066.

It is an arithmetic number, because the mean of its divisors is an integer number (36324505728).

Almost surely, 2^542115161261 is an apocalyptic number.

It is an amenable number.

542115161261 is a deficient number, since it is larger than the sum of its proper divisors (39076930387).

542115161261 is a wasteful number, since it uses less digits than its factorization.

542115161261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180052.

The product of its digits is 14400, while the sum is 35.

The spelling of 542115161261 in words is "five hundred forty-two billion, one hundred fifteen million, one hundred sixty-one thousand, two hundred sixty-one".