421147154 has 16 divisors (see below), whose sum is σ = 673318656. Its totient is φ = 196872000.

The previous prime is 421147151. The next prime is 421147201. The reversal of 421147154 is 451741124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421147151) 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, 35882 + ... + 46149.

It is an arithmetic number, because the mean of its divisors is an integer number (42082416).

Almost surely, 2^421147154 is an apocalyptic number.

421147154 is a deficient number, since it is larger than the sum of its proper divisors (252171502).

421147154 is a wasteful number, since it uses less digits than its factorization.

421147154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82201.

The product of its digits is 4480, while the sum is 29.

The square root of 421147154 is about 20521.8701389518. The cubic root of 421147154 is about 749.5684355690.

Adding to 421147154 its reverse (451741124), we get a palindrome (872888278).

The spelling of 421147154 in words is "four hundred twenty-one million, one hundred forty-seven thousand, one hundred fifty-four".