1017215542 has 16 divisors (see below), whose sum is σ = 1803929760. Its totient is φ = 420916608.

The previous prime is 1017215533. The next prime is 1017215543. The reversal of 1017215542 is 2455127101.

It is a self number, because there is not a number n which added to its sum of digits gives 1017215542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1017215543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252323 + ... + 1253134.

It is an arithmetic number, because the mean of its divisors is an integer number (112745610).

Almost surely, 2^1017215542 is an apocalyptic number.

1017215542 is a deficient number, since it is larger than the sum of its proper divisors (786714218).

1017215542 is a wasteful number, since it uses less digits than its factorization.

1017215542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505495.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1017215542 is about 31893.8166734557. The cubic root of 1017215542 is about 1005.7058948413.

The spelling of 1017215542 in words is "one billion, seventeen million, two hundred fifteen thousand, five hundred forty-two".