103978142 has 4 divisors (see below), whose sum is σ = 155967216. Its totient is φ = 51989070.

The previous prime is 103978129. The next prime is 103978181. The reversal of 103978142 is 241879301.

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

It is a super-2 number, since 2×103978142² = 21622908027544328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25994534 + ... + 25994537.

It is an arithmetic number, because the mean of its divisors is an integer number (38991804).

Almost surely, 2^103978142 is an apocalyptic number.

103978142 is a deficient number, since it is larger than the sum of its proper divisors (51989074).

103978142 is an equidigital number, since it uses as much as digits as its factorization.

103978142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51989073.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 103978142 is about 10196.9672942498. The cubic root of 103978142 is about 470.2339894194.

The spelling of 103978142 in words is "one hundred three million, nine hundred seventy-eight thousand, one hundred forty-two".