75470421 has 8 divisors (see below), whose sum is σ = 108367840. Its totient is φ = 46443312.

The previous prime is 75470411. The next prime is 75470431. The reversal of 75470421 is 12407457.

It is an interprime number because it is at equal distance from previous prime (75470411) and next prime (75470431).

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

It is not a de Polignac number, because 75470421 - 2¹⁴ = 75454037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75470411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967531 + ... + 967608.

It is an arithmetic number, because the mean of its divisors is an integer number (13545980).

Almost surely, 2^75470421 is an apocalyptic number.

It is an amenable number.

75470421 is a deficient number, since it is larger than the sum of its proper divisors (32897419).

75470421 is a wasteful number, since it uses less digits than its factorization.

75470421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935155.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 75470421 is about 8687.3713515654. The cubic root of 75470421 is about 422.5962032484.

Adding to 75470421 its reverse (12407457), we get a palindrome (87877878).

The spelling of 75470421 in words is "seventy-five million, four hundred seventy thousand, four hundred twenty-one".