70542421 has 8 divisors (see below), whose sum is σ = 74440800. Its totient is φ = 66662640.

The previous prime is 70542419. The next prime is 70542431. The reversal of 70542421 is 12424507.

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

It is not a de Polignac number, because 70542421 - 2¹ = 70542419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70542431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3531 + ... + 12391.

It is an arithmetic number, because the mean of its divisors is an integer number (9305100).

Almost surely, 2^70542421 is an apocalyptic number.

It is an amenable number.

70542421 is a deficient number, since it is larger than the sum of its proper divisors (3898379).

70542421 is a wasteful number, since it uses less digits than its factorization.

70542421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 70542421 is about 8398.9535657723. The cubic root of 70542421 is about 413.1903025025.

Adding to 70542421 its reverse (12424507), we get a palindrome (82966928).

The spelling of 70542421 in words is "seventy million, five hundred forty-two thousand, four hundred twenty-one".