542397680 has 40 divisors (see below), whose sum is σ = 1375719984. Its totient is φ = 197235200.

The previous prime is 542397673. The next prime is 542397683. The reversal of 542397680 is 86793245.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542397683) 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 7 ways as a sum of consecutive naturals, for example, 307301 + ... + 309060.

Almost surely, 2^542397680 is an apocalyptic number.

It is an amenable number.

542397680 is an abundant number, since it is smaller than the sum of its proper divisors (833322304).

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

542397680 is a wasteful number, since it uses less digits than its factorization.

542397680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616385 (or 616379 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 542397680 is about 23289.4327968716. The cubic root of 542397680 is about 815.5287471839.

The spelling of 542397680 in words is "five hundred forty-two million, three hundred ninety-seven thousand, six hundred eighty".