40102198 has 8 divisors (see below), whose sum is σ = 63319320. Its totient is φ = 18995760.

The previous prime is 40102177. The next prime is 40102199. The reversal of 40102198 is 89120104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×40102198³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40102199) 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, 527623 + ... + 527698.

It is an arithmetic number, because the mean of its divisors is an integer number (7914915).

Almost surely, 2^40102198 is an apocalyptic number.

40102198 is a deficient number, since it is larger than the sum of its proper divisors (23217122).

40102198 is a wasteful number, since it uses less digits than its factorization.

40102198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055342.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 40102198 is about 6332.6296275718. The cubic root of 40102198 is about 342.2862018381.

The spelling of 40102198 in words is "forty million, one hundred two thousand, one hundred ninety-eight".