542372121 has 12 divisors (see below), whose sum is σ = 791184420. Its totient is φ = 358000800.

The previous prime is 542372107. The next prime is 542372137. The reversal of 542372121 is 121273245.

It can be written as a sum of positive squares in 2 ways, for example, as 288320400 + 254051721 = 16980^2 + 15939^2 .

It is not a de Polignac number, because 542372121 - 2¹³ = 542363929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542372221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297426 + ... + 299243.

It is an arithmetic number, because the mean of its divisors is an integer number (65932035).

Almost surely, 2^542372121 is an apocalyptic number.

It is an amenable number.

542372121 is a deficient number, since it is larger than the sum of its proper divisors (248812299).

542372121 is a wasteful number, since it uses less digits than its factorization.

542372121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596776 (or 596773 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 542372121 is about 23288.8840651501. The cubic root of 542372121 is about 815.5159371324.

The spelling of 542372121 in words is "five hundred forty-two million, three hundred seventy-two thousand, one hundred twenty-one".