154139901 has 32 divisors (see below), whose sum is σ = 227836800. Its totient is φ = 92252160.

The previous prime is 154139899. The next prime is 154139903. The reversal of 154139901 is 109931451.

It is an interprime number because it is at equal distance from previous prime (154139899) and next prime (154139903).

It is not a de Polignac number, because 154139901 - 2¹ = 154139899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154139903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131046 + ... + 132216.

It is an arithmetic number, because the mean of its divisors is an integer number (7119900).

Almost surely, 2^154139901 is an apocalyptic number.

It is an amenable number.

154139901 is a deficient number, since it is larger than the sum of its proper divisors (73696899).

154139901 is a wasteful number, since it uses less digits than its factorization.

154139901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 154139901 is about 12415.3091383179. The cubic root of 154139901 is about 536.1731046386.

The spelling of 154139901 in words is "one hundred fifty-four million, one hundred thirty-nine thousand, nine hundred one".