542124509 has 16 divisors (see below), whose sum is σ = 598026240. Its totient is φ = 489315840.

The previous prime is 542124491. The next prime is 542124529. The reversal of 542124509 is 905421245.

It is a cyclic number.

It is not a de Polignac number, because 542124509 - 2¹² = 542120413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542124529) 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, 34532 + ... + 47714.

It is an arithmetic number, because the mean of its divisors is an integer number (37376640).

Almost surely, 2^542124509 is an apocalyptic number.

542124509 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

542124509 is a deficient number, since it is larger than the sum of its proper divisors (55901731).

542124509 is a wasteful number, since it uses less digits than its factorization.

542124509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13300.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 542124509 is about 23283.5673598356. The cubic root of 542124509 is about 815.3918143135.

The spelling of 542124509 in words is "five hundred forty-two million, one hundred twenty-four thousand, five hundred nine".