101520442 has 8 divisors (see below), whose sum is σ = 152673300. Its totient is φ = 50629344.

The previous prime is 101520427. The next prime is 101520473. The reversal of 101520442 is 244025101.

It can be written as a sum of positive squares in 2 ways, for example, as 99420841 + 2099601 = 9971^2 + 1449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64467 + ... + 66022.

Almost surely, 2^101520442 is an apocalyptic number.

101520442 is a deficient number, since it is larger than the sum of its proper divisors (51152858).

101520442 is a wasteful number, since it uses less digits than its factorization.

101520442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130880.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 101520442 is about 10075.7353081549. The cubic root of 101520442 is about 466.4994828571.

Adding to 101520442 its reverse (244025101), we get a palindrome (345545543).

The spelling of 101520442 in words is "one hundred one million, five hundred twenty thousand, four hundred forty-two".