542745730 has 32 divisors (see below), whose sum is σ = 1020133440. Its totient is φ = 207641280.

The previous prime is 542745727. The next prime is 542745733. The reversal of 542745730 is 37547245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (542745727) and next prime (542745733).

It is a self number, because there is not a number n which added to its sum of digits gives 542745730.

It is not an unprimeable number, because it can be changed into a prime (542745733) 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, 22285 + ... + 39775.

It is an arithmetic number, because the mean of its divisors is an integer number (31879170).

Almost surely, 2^542745730 is an apocalyptic number.

542745730 is a deficient number, since it is larger than the sum of its proper divisors (477387710).

542745730 is a wasteful number, since it uses less digits than its factorization.

542745730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17634.

The product of its (nonzero) digits is 117600, while the sum is 37.

The square root of 542745730 is about 23296.9038715448. The cubic root of 542745730 is about 815.7031481812.

The spelling of 542745730 in words is "five hundred forty-two million, seven hundred forty-five thousand, seven hundred thirty".