542777490 has 64 divisors (see below), whose sum is σ = 1460764800. Its totient is φ = 143404992.

The previous prime is 542777489. The next prime is 542777491. The reversal of 542777490 is 94777245.

It is an interprime number because it is at equal distance from previous prime (542777489) and next prime (542777491).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (542777491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20209 + ... + 38651.

It is an arithmetic number, because the mean of its divisors is an integer number (22824450).

Almost surely, 2^542777490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542777490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730382400).

542777490 is an abundant number, since it is smaller than the sum of its proper divisors (917987310).

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

542777490 is a wasteful number, since it uses less digits than its factorization.

542777490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18568 (or 18562 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 542777490 is about 23297.5854972141. The cubic root of 542777490 is about 815.7190587787.

The spelling of 542777490 in words is "five hundred forty-two million, seven hundred seventy-seven thousand, four hundred ninety".