1528431742 has 32 divisors (see below), whose sum is σ = 2468616192. Its totient is φ = 707867424.

The previous prime is 1528431739. The next prime is 1528431791. The reversal of 1528431742 is 2471348251.

It is a super-2 number, since 2×1528431742² = 4672207179906309128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377533 + ... + 381559.

It is an arithmetic number, because the mean of its divisors is an integer number (77144256).

Almost surely, 2^1528431742 is an apocalyptic number.

1528431742 is a deficient number, since it is larger than the sum of its proper divisors (940184450).

1528431742 is a wasteful number, since it uses less digits than its factorization.

1528431742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312.

The product of its digits is 53760, while the sum is 37.

The square root of 1528431742 is about 39095.1626419433. The cubic root of 1528431742 is about 1151.9015149981.

Adding to 1528431742 its reverse (2471348251), we get a palindrome (3999779993).

The spelling of 1528431742 in words is "one billion, five hundred twenty-eight million, four hundred thirty-one thousand, seven hundred forty-two".