87344242 has 4 divisors (see below), whose sum is σ = 131016366. Its totient is φ = 43672120.

The previous prime is 87344233. The next prime is 87344261. The reversal of 87344242 is 24244378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24244378 = 2 ⋅12122189.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 4879681 = 9081^2 + 2209^2 .

It is a super-2 number, since 2×87344242² = 15258033221109128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87344198 and 87344207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21836059 + ... + 21836062.

Almost surely, 2^87344242 is an apocalyptic number.

87344242 is a deficient number, since it is larger than the sum of its proper divisors (43672124).

87344242 is a wasteful number, since it uses less digits than its factorization.

87344242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43672123.

The product of its digits is 43008, while the sum is 34.

The square root of 87344242 is about 9345.8141432408. The cubic root of 87344242 is about 443.6884193592.

The spelling of 87344242 in words is "eighty-seven million, three hundred forty-four thousand, two hundred forty-two".