998081142 has 32 divisors (see below), whose sum is σ = 2074851072. Its totient is φ = 319796064.

The previous prime is 998081141. The next prime is 998081173. The reversal of 998081142 is 241180899.

It is a junction number, because it is equal to n+sod(n) for n = 998081094 and 998081103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998081141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8658 + ... + 45509.

It is an arithmetic number, because the mean of its divisors is an integer number (64839096).

Almost surely, 2^998081142 is an apocalyptic number.

998081142 is an abundant number, since it is smaller than the sum of its proper divisors (1076769930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998081142 is a wasteful number, since it uses less digits than its factorization.

998081142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54292.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 998081142 is about 31592.4222243246. The cubic root of 998081142 is about 999.3599711171.

The spelling of 998081142 in words is "nine hundred ninety-eight million, eighty-one thousand, one hundred forty-two".