247420154 has 8 divisors (see below), whose sum is σ = 387266400. Its totient is φ = 118331356.

The previous prime is 247420153. The next prime is 247420169. The reversal of 247420154 is 451024742.

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

It is a super-2 number, since 2×247420154² = 122433465210767432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247420153) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2689304 + ... + 2689395.

It is an arithmetic number, because the mean of its divisors is an integer number (48408300).

Almost surely, 2^247420154 is an apocalyptic number.

247420154 is a deficient number, since it is larger than the sum of its proper divisors (139846246).

247420154 is a wasteful number, since it uses less digits than its factorization.

247420154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378724.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 247420154 is about 15729.5948453862. The cubic root of 247420154 is about 627.7860932537.

Adding to 247420154 its reverse (451024742), we get a palindrome (698444896).

The spelling of 247420154 in words is "two hundred forty-seven million, four hundred twenty thousand, one hundred fifty-four".