155651042 has 8 divisors (see below), whose sum is σ = 233534556. Its totient is φ = 77806192.

The previous prime is 155651029. The next prime is 155651053. The reversal of 155651042 is 240156551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137851081 + 17799961 = 11741^2 + 4219^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 155650996 and 155651014.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4628 + ... + 18240.

Almost surely, 2^155651042 is an apocalyptic number.

155651042 is a deficient number, since it is larger than the sum of its proper divisors (77883514).

155651042 is a wasteful number, since it uses less digits than its factorization.

155651042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19332.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 155651042 is about 12476.0186758437. The cubic root of 155651042 is about 537.9195694267.

The spelling of 155651042 in words is "one hundred fifty-five million, six hundred fifty-one thousand, forty-two".