1475431421 has 2 divisors, whose sum is σ = 1475431422. Its totient is φ = 1475431420.

The previous prime is 1475431417. The next prime is 1475431427. The reversal of 1475431421 is 1241345741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1473715321 + 1716100 = 38389^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1475431421 - 2² = 1475431417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1475431427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 737715710 + 737715711.

It is an arithmetic number, because the mean of its divisors is an integer number (737715711).

Almost surely, 2^1475431421 is an apocalyptic number.

It is an amenable number.

1475431421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1475431421 is an equidigital number, since it uses as much as digits as its factorization.

1475431421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 1475431421 is about 38411.3449517197. The cubic root of 1475431421 is about 1138.4300285262.

The spelling of 1475431421 in words is "one billion, four hundred seventy-five million, four hundred thirty-one thousand, four hundred twenty-one".