40120130242 has 16 divisors (see below), whose sum is σ = 62098007832. Its totient is φ = 19427937280.

The previous prime is 40120130189. The next prime is 40120130249. The reversal of 40120130242 is 24203102104.

It can be written as a sum of positive squares in 4 ways, for example, as 13642006401 + 26478123841 = 116799^2 + 162721^2 .

It is not an unprimeable number, because it can be changed into a prime (40120130249) 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 7 ways as a sum of consecutive naturals, for example, 1774423 + ... + 1796890.

Almost surely, 2^40120130242 is an apocalyptic number.

40120130242 is a deficient number, since it is larger than the sum of its proper divisors (21977877590).

40120130242 is a wasteful number, since it uses less digits than its factorization.

40120130242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571493.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40120130242 its reverse (24203102104), we get a palindrome (64323232346).

The spelling of 40120130242 in words is "forty billion, one hundred twenty million, one hundred thirty thousand, two hundred forty-two".