421307954 has 4 divisors (see below), whose sum is σ = 631961934. Its totient is φ = 210653976.

The previous prime is 421307947. The next prime is 421307963. The reversal of 421307954 is 459703124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 387026929 + 34281025 = 19673^2 + 5855^2 .

It is a super-2 number, since 2×421307954² = 355000784207332232, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105326987 + ... + 105326990.

Almost surely, 2^421307954 is an apocalyptic number.

421307954 is a deficient number, since it is larger than the sum of its proper divisors (210653980).

421307954 is a wasteful number, since it uses less digits than its factorization.

421307954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210653979.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 421307954 is about 20525.7875366574. The cubic root of 421307954 is about 749.6638220758.

The spelling of 421307954 in words is "four hundred twenty-one million, three hundred seven thousand, nine hundred fifty-four".