155070742 has 16 divisors (see below), whose sum is σ = 252748800. Its totient is φ = 71084520.

The previous prime is 155070731. The next prime is 155070749. The reversal of 155070742 is 247070551.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155070749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64642 + ... + 66997.

It is an arithmetic number, because the mean of its divisors is an integer number (15796800).

Almost surely, 2^155070742 is an apocalyptic number.

155070742 is a deficient number, since it is larger than the sum of its proper divisors (97678058).

155070742 is a wasteful number, since it uses less digits than its factorization.

155070742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131691.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 155070742 is about 12452.7403409852. The cubic root of 155070742 is about 537.2502443050.

The spelling of 155070742 in words is "one hundred fifty-five million, seventy thousand, seven hundred forty-two".