103449442 has 4 divisors (see below), whose sum is σ = 155174166. Its totient is φ = 51724720.

The previous prime is 103449431. The next prime is 103449487. The reversal of 103449442 is 244944301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244944301 = 7 ⋅34992043.

It can be written as a sum of positive squares in only one way, i.e., 101787921 + 1661521 = 10089^2 + 1289^2 .

It is a super-2 number, since 2×103449442² = 21403574100222728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 25862359 + ... + 25862362.

Almost surely, 2^103449442 is an apocalyptic number.

103449442 is a deficient number, since it is larger than the sum of its proper divisors (51724724).

103449442 is an equidigital number, since it uses as much as digits as its factorization.

103449442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51724723.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 103449442 is about 10171.0098810295. The cubic root of 103449442 is about 469.4356316256.

The spelling of 103449442 in words is "one hundred three million, four hundred forty-nine thousand, four hundred forty-two".