997350142 has 4 divisors (see below), whose sum is σ = 1496025216. Its totient is φ = 498675070.

The previous prime is 997350139. The next prime is 997350143. The reversal of 997350142 is 241053799.

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

It is a junction number, because it is equal to n+sod(n) for n = 997350095 and 997350104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997350143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249337534 + ... + 249337537.

It is an arithmetic number, because the mean of its divisors is an integer number (374006304).

Almost surely, 2^997350142 is an apocalyptic number.

997350142 is a deficient number, since it is larger than the sum of its proper divisors (498675074).

997350142 is a wasteful number, since it uses less digits than its factorization.

997350142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498675073.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 997350142 is about 31580.8508751743. The cubic root of 997350142 is about 999.1159326553.

The spelling of 997350142 in words is "nine hundred ninety-seven million, three hundred fifty thousand, one hundred forty-two".