247140342 has 16 divisors (see below), whose sum is σ = 549200880. Its totient is φ = 82380096.

The previous prime is 247140337. The next prime is 247140371. The reversal of 247140342 is 243041742.

It is a super-2 number, since 2×247140342² = 122156697287753928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2288283 + ... + 2288390.

It is an arithmetic number, because the mean of its divisors is an integer number (34325055).

Almost surely, 2^247140342 is an apocalyptic number.

247140342 is an abundant number, since it is smaller than the sum of its proper divisors (302060538).

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

247140342 is a wasteful number, since it uses less digits than its factorization.

247140342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576684 (or 4576678 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 247140342 is about 15720.6978852721. The cubic root of 247140342 is about 627.5493457065.

The spelling of 247140342 in words is "two hundred forty-seven million, one hundred forty thousand, three hundred forty-two".