119542021 has 4 divisors (see below), whose sum is σ = 122322112. Its totient is φ = 116761932.

The previous prime is 119541997. The next prime is 119542039. The reversal of 119542021 is 120245911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120245911 = 1571 ⋅76541.

It is a cyclic number.

It is not a de Polignac number, because 119542021 - 2¹⁵ = 119509253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119542421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389981 + ... + 1390066.

It is an arithmetic number, because the mean of its divisors is an integer number (30580528).

Almost surely, 2^119542021 is an apocalyptic number.

It is an amenable number.

119542021 is a deficient number, since it is larger than the sum of its proper divisors (2780091).

119542021 is an equidigital number, since it uses as much as digits as its factorization.

119542021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780090.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 119542021 is about 10933.5273814081. The cubic root of 119542021 is about 492.6141297166.

Adding to 119542021 its reverse (120245911), we get a palindrome (239787932).

The spelling of 119542021 in words is "one hundred nineteen million, five hundred forty-two thousand, twenty-one".