42155098 has 4 divisors (see below), whose sum is σ = 63232650. Its totient is φ = 21077548.

The previous prime is 42155089. The next prime is 42155101. The reversal of 42155098 is 89055124.

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

It can be written as a sum of positive squares in only one way, i.e., 39275289 + 2879809 = 6267^2 + 1697^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538773 + ... + 10538776.

Almost surely, 2^42155098 is an apocalyptic number.

42155098 is a deficient number, since it is larger than the sum of its proper divisors (21077552).

42155098 is a wasteful number, since it uses less digits than its factorization.

42155098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21077551.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 42155098 is about 6492.6957421398. The cubic root of 42155098 is about 348.0300156873.

The spelling of 42155098 in words is "forty-two million, one hundred fifty-five thousand, ninety-eight".