155142735 has 16 divisors (see below), whose sum is σ = 270794880. Its totient is φ = 75220640.

The previous prime is 155142727. The next prime is 155142737. The reversal of 155142735 is 537241551.

It is not a de Polignac number, because 155142735 - 2³ = 155142727 is a prime.

It is a super-3 number, since 3×155142735³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 155142696 and 155142705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155142737) 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, 469965 + ... + 470294.

It is an arithmetic number, because the mean of its divisors is an integer number (16924680).

Almost surely, 2^155142735 is an apocalyptic number.

155142735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155142735 is a deficient number, since it is larger than the sum of its proper divisors (115652145).

155142735 is a wasteful number, since it uses less digits than its factorization.

155142735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940278.

The product of its digits is 21000, while the sum is 33.

The square root of 155142735 is about 12455.6306544470. The cubic root of 155142735 is about 537.3333725433. Note that the first 4 decimals are identical.

The spelling of 155142735 in words is "one hundred fifty-five million, one hundred forty-two thousand, seven hundred thirty-five".