402102055 has 8 divisors (see below), whose sum is σ = 483328944. Its totient is φ = 321144000.

The previous prime is 402102053. The next prime is 402102091. The reversal of 402102055 is 550201204.

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

It is not a de Polignac number, because 402102055 - 2¹ = 402102053 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 (402102053) 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, 63901 + ... + 69910.

It is an arithmetic number, because the mean of its divisors is an integer number (60416118).

Almost surely, 2^402102055 is an apocalyptic number.

402102055 is a deficient number, since it is larger than the sum of its proper divisors (81226889).

402102055 is a wasteful number, since it uses less digits than its factorization.

402102055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134417.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 402102055 is about 20052.4825146414. The cubic root of 402102055 is about 738.0947182234.

Adding to 402102055 its reverse (550201204), we get a palindrome (952303259).

The spelling of 402102055 in words is "four hundred two million, one hundred two thousand, fifty-five".