1517420742 has 16 divisors (see below), whose sum is σ = 3108862512. Its totient is φ = 493470080.

The previous prime is 1517420741. The next prime is 1517420789. The reversal of 1517420742 is 2470247151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1517420741) 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, 3083943 + ... + 3084434.

It is an arithmetic number, because the mean of its divisors is an integer number (194303907).

Almost surely, 2^1517420742 is an apocalyptic number.

1517420742 is an abundant number, since it is smaller than the sum of its proper divisors (1591441770).

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

1517420742 is a wasteful number, since it uses less digits than its factorization.

1517420742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6168423.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 1517420742 is about 38954.0850489393. The cubic root of 1517420742 is about 1149.1287015895.

Adding to 1517420742 its reverse (2470247151), we get a palindrome (3987667893).

The spelling of 1517420742 in words is "one billion, five hundred seventeen million, four hundred twenty thousand, seven hundred forty-two".