101102542 has 4 divisors (see below), whose sum is σ = 151653816. Its totient is φ = 50551270.

The previous prime is 101102539. The next prime is 101102581. The reversal of 101102542 is 245201101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245201101 = 907 ⋅270343.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25275634 + ... + 25275637.

It is an arithmetic number, because the mean of its divisors is an integer number (37913454).

Almost surely, 2^101102542 is an apocalyptic number.

101102542 is a deficient number, since it is larger than the sum of its proper divisors (50551274).

101102542 is an equidigital number, since it uses as much as digits as its factorization.

101102542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50551273.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 101102542 is about 10054.9759820698. The cubic root of 101102542 is about 465.8585011270.

Adding to 101102542 its reverse (245201101), we get a palindrome (346303643).

The spelling of 101102542 in words is "one hundred one million, one hundred two thousand, five hundred forty-two".