561127542 has 8 divisors (see below), whose sum is σ = 1122255096. Its totient is φ = 187042512.

The previous prime is 561127537. The next prime is 561127549. The reversal of 561127542 is 245721165.

It is a sphenic number, since it is the product of 3 distinct primes.

561127542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561127549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46760623 + ... + 46760634.

It is an arithmetic number, because the mean of its divisors is an integer number (140281887).

Almost surely, 2^561127542 is an apocalyptic number.

561127542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

561127542 is a wasteful number, since it uses less digits than its factorization.

561127542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93521262.

The product of its digits is 16800, while the sum is 33.

The square root of 561127542 is about 23688.1308253733. The cubic root of 561127542 is about 824.8098941217.

It can be divided in two parts, 5611 and 27542, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 561127542 in words is "five hundred sixty-one million, one hundred twenty-seven thousand, five hundred forty-two".