147571421 has 2 divisors, whose sum is σ = 147571422. Its totient is φ = 147571420.

The previous prime is 147571409. The next prime is 147571433. The reversal of 147571421 is 124175741.

It is a balanced prime because it is at equal distance from previous prime (147571409) and next prime (147571433).

It can be written as a sum of positive squares in only one way, i.e., 110544196 + 37027225 = 10514^2 + 6085^2 .

It is a cyclic number.

It is not a de Polignac number, because 147571421 - 2⁶ = 147571357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147571481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73785710 + 73785711.

It is an arithmetic number, because the mean of its divisors is an integer number (73785711).

Almost surely, 2^147571421 is an apocalyptic number.

It is an amenable number.

147571421 is a deficient number, since it is larger than the sum of its proper divisors (1).

147571421 is an equidigital number, since it uses as much as digits as its factorization.

147571421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840, while the sum is 32.

The square root of 147571421 is about 12147.8978016775. The cubic root of 147571421 is about 528.4461681094.

The spelling of 147571421 in words is "one hundred forty-seven million, five hundred seventy-one thousand, four hundred twenty-one".