1520003742 has 64 divisors (see below), whose sum is σ = 3175780608. Its totient is φ = 484640000.

The previous prime is 1520003717. The next prime is 1520003747. The reversal of 1520003742 is 2473000251.

It is a super-2 number, since 2×1520003742² = 4620822751388005128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520003747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3254593 + ... + 3255059.

It is an arithmetic number, because the mean of its divisors is an integer number (49621572).

Almost surely, 2^1520003742 is an apocalyptic number.

1520003742 is an abundant number, since it is smaller than the sum of its proper divisors (1655776866).

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

1520003742 is a wasteful number, since it uses less digits than its factorization.

1520003742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 1520003742 is about 38987.2253693437. The cubic root of 1520003742 is about 1149.7803593133.

Adding to 1520003742 its reverse (2473000251), we get a palindrome (3993003993).

The spelling of 1520003742 in words is "one billion, five hundred twenty million, three thousand, seven hundred forty-two".