70501421 has 8 divisors (see below), whose sum is σ = 71793024. Its totient is φ = 69214320.

The previous prime is 70501399. The next prime is 70501423. The reversal of 70501421 is 12410507.

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

It is a cyclic number.

It is not a de Polignac number, because 70501421 - 2⁶ = 70501357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70501393 and 70501402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70501423) 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, 53456 + ... + 54758.

It is an arithmetic number, because the mean of its divisors is an integer number (8974128).

Almost surely, 2^70501421 is an apocalyptic number.

It is an amenable number.

70501421 is a deficient number, since it is larger than the sum of its proper divisors (1291603).

70501421 is a wasteful number, since it uses less digits than its factorization.

70501421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 70501421 is about 8396.5124307655. The cubic root of 70501421 is about 413.1102367999.

Adding to 70501421 its reverse (12410507), we get a palindrome (82911928).

The spelling of 70501421 in words is "seventy million, five hundred one thousand, four hundred twenty-one".