641420151 has 8 divisors (see below), whose sum is σ = 871363440. Its totient is φ = 419545152.

The previous prime is 641420141. The next prime is 641420161. The reversal of 641420151 is 151024146.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (641420141) and next prime (641420161).

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

It is not a de Polignac number, because 641420151 - 2¹⁰ = 641419127 is a prime.

It is a super-2 number, since 2×641420151² = 822839620217725602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641420141) 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, 2016886 + ... + 2017203.

It is an arithmetic number, because the mean of its divisors is an integer number (108920430).

Almost surely, 2^641420151 is an apocalyptic number.

641420151 is a deficient number, since it is larger than the sum of its proper divisors (229943289).

641420151 is a wasteful number, since it uses less digits than its factorization.

641420151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034145.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 641420151 is about 25326.2739264978. The cubic root of 641420151 is about 862.4108264875.

Adding to 641420151 its reverse (151024146), we get a palindrome (792444297).

It can be divided in two parts, 6414 and 20151, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 641420151 in words is "six hundred forty-one million, four hundred twenty thousand, one hundred fifty-one".