54142049 has 4 divisors (see below), whose sum is σ = 58306836. Its totient is φ = 49977264.

The previous prime is 54142019. The next prime is 54142051. The reversal of 54142049 is 94024145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94024145 = 5 ⋅18804829.

It can be written as a sum of positive squares in 2 ways, for example, as 32982049 + 21160000 = 5743^2 + 4600^2 .

It is a cyclic number.

It is not a de Polignac number, because 54142049 - 2¹² = 54137953 is a prime.

It is a super-2 number, since 2×54142049² = 5862722939836802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54142009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082374 + ... + 2082399.

It is an arithmetic number, because the mean of its divisors is an integer number (14576709).

Almost surely, 2^54142049 is an apocalyptic number.

It is an amenable number.

54142049 is a deficient number, since it is larger than the sum of its proper divisors (4164787).

54142049 is a wasteful number, since it uses less digits than its factorization.

54142049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164786.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 54142049 is about 7358.1280907579. The cubic root of 54142049 is about 378.3074516807.

The spelling of 54142049 in words is "fifty-four million, one hundred forty-two thousand, forty-nine".