83421242 has 4 divisors (see below), whose sum is σ = 125131866. Its totient is φ = 41710620.

The previous prime is 83421241. The next prime is 83421257. The reversal of 83421242 is 24212438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24212438 = 2 ⋅12106219.

It can be written as a sum of positive squares in only one way, i.e., 51825601 + 31595641 = 7199^2 + 5621^2 .

It is not an unprimeable number, because it can be changed into a prime (83421241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20855309 + ... + 20855312.

Almost surely, 2^83421242 is an apocalyptic number.

83421242 is a deficient number, since it is larger than the sum of its proper divisors (41710624).

83421242 is a wasteful number, since it uses less digits than its factorization.

83421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41710623.

The product of its digits is 3072, while the sum is 26.

The square root of 83421242 is about 9133.5229785664. The cubic root of 83421242 is about 436.9437689798.

The spelling of 83421242 in words is "eighty-three million, four hundred twenty-one thousand, two hundred forty-two".