1017217542 has 128 divisors (see below), whose sum is σ = 2446640640. Its totient is φ = 278415360.

The previous prime is 1017217529. The next prime is 1017217567. The reversal of 1017217542 is 2457127101.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4441884 + ... + 4442112.

It is an arithmetic number, because the mean of its divisors is an integer number (19114380).

Almost surely, 2^1017217542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1017217542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223320320).

1017217542 is an abundant number, since it is smaller than the sum of its proper divisors (1429423098).

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

1017217542 is a wasteful number, since it uses less digits than its factorization.

1017217542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1017217542 is about 31893.8480274802. The cubic root of 1017217542 is about 1005.7065539643.

The spelling of 1017217542 in words is "one billion, seventeen million, two hundred seventeen thousand, five hundred forty-two".