101205542 has 4 divisors (see below), whose sum is σ = 151808316. Its totient is φ = 50602770.

The previous prime is 101205541. The next prime is 101205547. The reversal of 101205542 is 245502101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101205541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25301384 + ... + 25301387.

It is an arithmetic number, because the mean of its divisors is an integer number (37952079).

Almost surely, 2^101205542 is an apocalyptic number.

101205542 is a deficient number, since it is larger than the sum of its proper divisors (50602774).

101205542 is an equidigital number, since it uses as much as digits as its factorization.

101205542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50602773.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 101205542 is about 10060.0965204117. The cubic root of 101205542 is about 466.0166479590.

Adding to 101205542 its reverse (245502101), we get a palindrome (346707643).

The spelling of 101205542 in words is "one hundred one million, two hundred five thousand, five hundred forty-two".