1555428241122 has 32 divisors (see below), whose sum is σ = 3555305695872. Its totient is φ = 444402925824.

The previous prime is 1555428241117. The next prime is 1555428241127. The reversal of 1555428241122 is 2211428245551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1555428241117) and next prime (1555428241127).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1555428241127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4886428 + ... + 5195000.

It is an arithmetic number, because the mean of its divisors is an integer number (111103302996).

Almost surely, 2^{1555428241122} is an apocalyptic number.

1555428241122 is an abundant number, since it is smaller than the sum of its proper divisors (1999877454750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555428241122 is a wasteful number, since it uses less digits than its factorization.

1555428241122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428602.

The product of its digits is 256000, while the sum is 42.

The spelling of 1555428241122 in words is "one trillion, five hundred fifty-five billion, four hundred twenty-eight million, two hundred forty-one thousand, one hundred twenty-two".