101142946 has 4 divisors (see below), whose sum is σ = 151714422. Its totient is φ = 50571472.

The previous prime is 101142931. The next prime is 101142991. The reversal of 101142946 is 649241101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 82609921 + 18533025 = 9089^2 + 4305^2 .

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 as a sum of consecutive naturals, namely, 25285735 + ... + 25285738.

Almost surely, 2^101142946 is an apocalyptic number.

101142946 is a deficient number, since it is larger than the sum of its proper divisors (50571476).

101142946 is an equidigital number, since it uses as much as digits as its factorization.

101142946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50571475.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 101142946 is about 10056.9849358543. The cubic root of 101142946 is about 465.9205504737.

The spelling of 101142946 in words is "one hundred one million, one hundred forty-two thousand, nine hundred forty-six".