155401404255142 has 8 divisors (see below), whose sum is σ = 235721231173800. Its totient is φ = 76827660530544.

The previous prime is 155401404255137. The next prime is 155401404255151. The reversal of 155401404255142 is 241552404104551.

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

It is a super-2 number, since 2×155401404255142² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436520798292 + ... + 436520798647.

It is an arithmetic number, because the mean of its divisors is an integer number (29465153896725).

Almost surely, 2^{155401404255142} is an apocalyptic number.

155401404255142 is a deficient number, since it is larger than the sum of its proper divisors (80319826918658).

155401404255142 is an equidigital number, since it uses as much as digits as its factorization.

155401404255142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873041597030.

The product of its (nonzero) digits is 640000, while the sum is 43.

Adding to 155401404255142 its reverse (241552404104551), we get a palindrome (396953808359693).

The spelling of 155401404255142 in words is "one hundred fifty-five trillion, four hundred one billion, four hundred four million, two hundred fifty-five thousand, one hundred forty-two".