981357142 has 32 divisors (see below), whose sum is σ = 1586398464. Its totient is φ = 454377600.

The previous prime is 981357131. The next prime is 981357151. The reversal of 981357142 is 241753189.

It is a junction number, because it is equal to n+sod(n) for n = 981357095 and 981357104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136428 + ... + 143440.

It is an arithmetic number, because the mean of its divisors is an integer number (49574952).

Almost surely, 2^981357142 is an apocalyptic number.

981357142 is a deficient number, since it is larger than the sum of its proper divisors (605041322).

981357142 is a wasteful number, since it uses less digits than its factorization.

981357142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7144.

The product of its digits is 60480, while the sum is 40.

The square root of 981357142 is about 31326.6203411731. The cubic root of 981357142 is about 993.7466916441.

The spelling of 981357142 in words is "nine hundred eighty-one million, three hundred fifty-seven thousand, one hundred forty-two".