147541421 has 2 divisors, whose sum is σ = 147541422. Its totient is φ = 147541420.

The previous prime is 147541417. The next prime is 147541451. The reversal of 147541421 is 124145741.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103836100 + 43705321 = 10190^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 147541421 - 2² = 147541417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147541451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73770710 + 73770711.

It is an arithmetic number, because the mean of its divisors is an integer number (73770711).

Almost surely, 2^147541421 is an apocalyptic number.

It is an amenable number.

147541421 is a deficient number, since it is larger than the sum of its proper divisors (1).

147541421 is an equidigital number, since it uses as much as digits as its factorization.

147541421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 147541421 is about 12146.6629573723. The cubic root of 147541421 is about 528.4103561631.

The spelling of 147541421 in words is "one hundred forty-seven million, five hundred forty-one thousand, four hundred twenty-one".